watermelloonn watermelloonn
  • 24-07-2018
  • SAT
contestada

How do you solve this problem

How do you solve this problem class=
Relax

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lifelearner27 lifelearner27
  • 24-07-2018
Pretty sure it’s d, since z = (x^2 + x)(x^2 + x) + x^2 + x
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choixongdong
choixongdong choixongdong
  • 26-07-2018

y = x^2 + x

z = y^2 + y

substitute y = x^2 + x into z = y^2 + y

z = (x^2 + x)^2 + (x^2 + x)

z = x^4 + 2x^3 + x^2 + x^2 + x

z = x^4 + 2x^3 + 2x^2 + x

Answer is

x^4 + 2x^3 + 2x^2 + x

Answer Link

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