Mathway

Visit Mathway on the web

Start 7-day free trial on the app

Start 7-day free trial on the app

Download free on Amazon

Download free in Windows Store

Take a photo of your math problem on the app

Precalculus Examples

2 n^{2} - 3

$2 n^{2} - 3$

Step 1

Substitute in the value of

n

$n$ to find the

n

$n$ th term.

a_{1} = 2 {(1)}^{2} - 3

$a_{1} = 2 {(1)}^{2} - 3$

Step 2

Simplify each term.

Tap for more steps...

Step 2.1

One to any power is one.

a_{1} = 2 \cdot 1 - 3

$a_{1} = 2 \cdot 1 - 3$

Step 2.2

Multiply

2

$2$ by

1

$1$ .

a_{1} = 2 - 3

$a_{1} = 2 - 3$

a_{1} = 2 - 3

$a_{1} = 2 - 3$

Step 3

Subtract

3

$3$ from

2

$2$ .

a_{1} = - 1

$a_{1} = - 1$

Enter YOUR Problem

Mathway requires javascript and a modern browser.

[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]

$[\begin{array}{c} x^{2} & \frac{1}{2} \\ \sqrt{π} & \int x d x \end{array}]$