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2 years ago

13

Solve (x + 4)2 - 3(x + 4) – 3 = 0 using substitution.

1 answer:

poizon [28]2 years ago

6 0

(x+4) x 2-3(x+4)-3=0
2x+8-3(x+4)-3=0
2x+8-3x-12-3=0
-x -7=0
-x=7
x=7

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