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Solve (x+3)^2 = 4x+17 where did i go wrong?
(x+3)(x+3 )= 4x+17
x^2 + 3x + 3x + 9 = 4x+17
x^2 + 6x + 9 = 4x + 17
x^2 + 6x + 9 - 4x - 17 = 0
x^2 + 2x - 8 = 0
(x-2)(x+4) <-- USING THE CROSS METHOD
x= -2, 4 is my cross method working incorrect or something? do explain my mistake
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Quadratic
Quadratic equation
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- Forum: General Math