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

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Answer 1 · 2018-06-26T14:00:09

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

$-8 - (81/9)(x^2)^2 + 7$

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

$=> -1 - 9 x^4$

$=> -(1 + (3x^2)^2)$

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