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Sagot :

Bjr

1)

2x-8(x-1)=6(1-x)

2x-8x+8=6-6x

-6x+8=6-6x

8=6

x∈Ø

2)

(2x+1)(2x+1)-4=(2x+3)(2x-1)

(2x+1)²-4=4x²-2x+6x-3

4x²+4x+1-4=4x²-2x+6x-3

4x+1-4=-2x+6x-3

4x-3=4x-3

x∈ℝ

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