Answer:
Step-by-step explanation:
2(x+7)^2 =98
(x+7)^2 = 49 (divide both sides by 2)
(x +7) = [tex]\sqrt{49}[/tex] (square root both sides)
x + 7 = 7 ( we are not sure if this is -7 or +7, because either would work )
so we have two solutions now
x +7 = -7 or x +7 = 7
x = -7 -7 or x =7 -7 (subtract 7 from both sides)
x = - 14 or x = 0
