Question

(x-1)²-x=7 ajuda ae ​

Answer 1

(x-1)²-x=7

x²-2x1+1²-x=7

x²-3x=6

x²-3x-6=0

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A=1  B=-3  C=-6

Δ=b²-4ac

x1, x2=-b±√Δ

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      2a

x1≈1,37228

x2≈4,37228