Which quadratic equation equivalent to (x+2)^2+5(x+2)-6=0

asked May 1, 2021 180k views

2 votes

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4 votes

Answer:

The answer is C

Explanation:

Gordon Mckeown answered May 2, 2021

4.9k points

5 votes

Answer:

$\large\boxed{u^2+5u-6=0,\ where\ u=(x+2)}$

Explanation:

$(x+2)^2+5(x+2)-6=0\\\\\text{Substitute}\ (x+2)=u:\\\\\underbrace{(x+2)}_(u)^{}^2+5\underbrace{(x+2)}_(u)-6=0\\\\u^2+5u-6=0$

Edst answered May 6, 2021

by Edst

5.5k points

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