Answered

Pouvez vous m'aider je n'y arrive pas
x - 7
-----  = 1 + x
2 - x

Sagot :

CARO67000
x-7 = ( 1+x) * (2-x)
x-7 = 2 - x + 2x - x exp 2
x-x-9 = - xexp2
-9 = - xexp2
9 = xexp 2
x =3
[tex] \frac{x-7}{2-x} = 1+x \frac{x-7}{2-x} = \frac{(1+x)(2-x)}{1(2-x)} x-7 = 2-x+2x-x² x+x-2x+x² = 2+7 x²= 9 x= \sqrt{9} x= 3[/tex]
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