alwrn16 alwrn16
  • 12-05-2020
  • Mathematics
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Solve: x2 − 2x + 1 = 4

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saya
saya saya
  • 12-05-2020

x^2-2x+1=4    subtract 4 from both sides

x^2-2x-3   factor

(x-3)(x+1)  set equal to zero

x=3, -1

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