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

1 Answer

Jun 26, 2018

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

Explanation:

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

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

#=> -1 - 9 x^4#

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

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