Question

giving medals and fanning please help

What are the solutions to the equation x2 + 4 = 148?

A.
–4 and 4

B.
–12 and 12

C.
–2 and 2

D.
–11 and 11

Answer 1

First step is to rearrange the equation, getting everything on one side

x^2 - 144 = 0

At this point it's pretty clear what to do

Difference of Perfect Squares

(x+12)(x-12) = 0

(x+12) = 0, (x-12) = 0

x = -12, 12
B

Answer 2

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