Enter a problem...

Precalculus Examples

Popular Problems

Simplify 4cos(x)^3-3cos(x)

$4 \cos^{3} (x) - 3 \cos (x)$

Step 1

Apply the cosine triple-angle identity.

$\cos (3 x)$

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

Please ensure that your password is at least 8 characters and contains each of the following:

a number
a letter
a special character: @$#!%*?&