Solve the quadratic equation.

(x + 3)2 = 64
a) x = 5 or -11
b) x = 11 or -5
c) x = ± 3
d) x = ± 11

The answer is A. You start by "undoing" the square on the left by taking the square root of both sides, which gives you, simplified version here, x+3=+/-8. Move the 3 over by subtraction to get 2 different values for x now: x=8-3 which is 5, or x= -8-3 which is -11.

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