# How do you simplify -8 - 81 / 9 x 2^2 + 7?

Jun 26, 2018

color(brown)(=> -(1 + (3x^2)^2)

#### Explanation:

$- 8 - \left(\frac{81}{9}\right) {\left({x}^{2}\right)}^{2} + 7$

=> -1 - (cancel(81)^color(crimson)(9))(x^4

$\implies - 1 - 9 {x}^{4}$

$\implies - \left(1 + {\left(3 {x}^{2}\right)}^{2}\right)$