What is the sum of all possible solutions to |x - 4|^2 + |x - 4| = 25?

Correct answer marked below

A

0

B

5

8

Correct

D

11

E

15

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What this question tests

Your ability to manipulate linear and quadratic expressions, substitute unknowns, and solve equations under time pressure.

Losing a sign when moving terms across the equals sign, or dividing both sides by a variable that could equal zero.

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