Expressions and Equations Calculators

Solve Equations

This calculator will:
(1.) Solve one-variable linear equations.
(2.) Solve one-variable quadratic equations.
(3.) Solve one-variable cubic equations.
(4.) Solve one-variable absolute value equations.
(5.) Solve one-variable rational/fractional equations.
(6.) Solve one-variable radical equations.
(7.) Give the answer(s) in the simplest exact forms.
(8.) Graph the real solutions(roots) on a number line.
(9.) Calculate the sum of real roots as applicable.
(10.) Calculate the product of real roots as applicable.
To see the answer(s) in decimals, click the "Approximate forms" link.
To see the answer(s) in the simplest / exact forms, click the "Exact forms" link.

To use the calculator, please:
(1.) Type your equation in the textbox (the bigger textbox).
(2.) Type it according to the examples I listed.
(3.) Delete the "default" expression in the textbox of the calculator.
(4.) Copy and paste the equation you typed, into the small textbox of the calculator.
(5.) Click the "Submit" button.
(6.) Check to make sure that it is the correct equation you typed.
(7.) Review the answers.

• Using the Solve Equations Calculator
• All outputs/answers are written as both integers and/or decimals; and integers and/or fractions.
• Linear Equations: Type: $5p - 4 = 21$ as 5 * p - 4 = 21
• Linear Equations: Type: $-1.2p + 1.25 = 0.77$ as -1.2 * p + 1.25 = 0.77
• Linear Equations: Type: $\dfrac{3}{10} - \dfrac{7k}{15} = \dfrac{2}{3}$ as (3/10) - (7 * k/15) = (2/3)
• Linear Equations: Type: $-2m - 3(4 - 2m) = 2(m - 3) + 2$ as -2 * m - 3 * (4 - 2m) = 2 * (m - 3) + 2
• Linear Equations: Type: $2[-(x - 1) + 4] = 5 + [-(6x - 7) + 9x]$ as 2 * [-(x - 1) + 4] = 5 + [-(6 * x - 7) + 9 * x]
• Linear Equations: Type: $2x - {x - [3x - (6x + 9)]} = 8x - 1$ as 2 * x - {x - [3 * x - (6 * x + 9)]} = 8 * x - 1
• Rational Equations: Type: $\dfrac{4}{p + 8} + \dfrac{5}{p^2 - 8p + 64} = \dfrac{768}{p^3 + 512}$ as (4/(p + 8)) + (5/(p^2 - 8 * p + 64)) = (768 / (p^3 + 512))

Solve

Solve Quadratic Equations

Solve Literal Equations - Solve for a Specified Variable

This calculator will:
(1.) Solve any equation for a specified variable.
In other words, it expresses a variable in terms of other variables.

To use the calculator, please:
(1.) Type your equation in the textbox (the bigger textbox).
(2.) Type it according to the examples I listed.
(3.) Delete the "default" equation in the textbox of the calculator.
(4.) Copy and paste the equation you typed, into the small textbox of the calculator.
(5.) Type the variable for which you want to isolate.
(5.) Click the "Submit" button.
(6.) Check to make sure that it is the correct equation you typed.
(7.) Review the answer.

• Using the Solve Literal Equations Calculator
• Type: $V = l * w * h$ for $w$ as V = l * w * h for w
• Type: $F = \dfrac{mv}{t}$ for $t$ as F = (m * v)/t for t
• Type: $P = a + b + c$ for $b$ as P = a + b + c for b
• Type: $A = \dfrac{1}{2}h(l_1 + l_2)$ for $h$ as A = (1/2) * h * (l_1 + l_2) for h

Solve for

Mixtures

Still in development
Please check back soon
The Mathematics of Finance is ready

Motion

Still in development
Please check back soon

Given: Principal (Investment), Two Interest Rates, Time, Interest
Both accounts earned interest.

To Find: Investment at each Rate, Amount

Principal is $

Rates are in What option? Percent Decimal AND in What option? Percent Decimal

Time is in What option? Years Months Weeks Days: Ordinary Days: Exact

Interest is $

Calculate

Given: Principal (Investment), Two Interest Rates, Time, Interest
One account received a gain. The other account suffered a loss.

To Find: Investment at each Rate, Amount

Principal is $

Rates are in What option? Percent Decimal (gain) AND in What option? Percent Decimal (loss)

Time is in What option? Years Months Weeks Days: Ordinary Days: Exact

Interest is $

Calculate

Given: Two Interest Rates, Time, Interest
One account received "some" times as much investment as the other account.
The account with the lower rate received "some" times as much investment as the account with the higher rate.

To Find: Investment at each Rate, Total Investment, Amount

Investment at: Lower Rate in What option? Percent Decimal

RECEIVED times as much investment as the

Higher Rate in What option? Percent Decimal

Time is in What option? Years Months Weeks Days: Ordinary Days: Exact

Interest is $

Calculate

Given: Two Interest Rates, Time, Interest
One account received "some" times as much investment as the other account.
The account with the higher rate received "some" times as much investment as the account with the lower rate.

To Find: Investment at each Rate, Total Investment, Amount

Investment at: Higher Rate in What option? Percent Decimal

RECEIVED times as much investment as the

Lower Rate in What option? Percent Decimal

Time is in What option? Years Months Weeks Days: Ordinary Days: Exact

Interest is $

Calculate

Make a Table of Values, Graph and Trace Functions Using the TI-84 Calculator

This calculator will:
(1.) Form a Table of Values.
(2.) Graph equations/functions.
(3.) Trace functions.
(4.) Displays the Table of Values and the Graph in the same window.

To use the calculator, please:
(1.) Visit the link: TI-84 Calculator
(2.) Click the "Graphing" folder.
(3.) Click the link of "whatever you want to do".
(4.) Follow the directions as illustrated by the "blinking light".