5(x+7)²=1125 with solution pls
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Answer:
x = 8, -22
Step-by-step explanation:
divide both sides by 5
(x+7)^2 = 1125/5
simplify the fraction
(x+7)^2 = 225
take the square root of both sides
x+7 = ±√225
then just solve it.
x+7 = ± 15
15 or -15
substitute ±15 to the equation
x+7 = 15
x = 8
x+(-22) = 15
x = -22