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19 January, 20:49

Solve (x + 1) 2 - 4 (x + 1) + 2 = 0 using substitution.

U

4 (x + 1)

x + 1

(x + 1) 2

+1
Answers (1)
  1. 19 January, 21:17
    0
    u=x+1

    u2-4u+2=0

    -2u+2=0

    u=1=x+1

    x=0
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