bonsoir
a) 2 ( x + 3) = - 5
2 x + 6 = - 5
2 x = - 5 - 6
2 x = - 11
x = - 11/2 = - 5.5
b) x ( 1 - x ) = 3 - x²
x - x² = 3 - x²
- x² + x² + x = 3
x = 3
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bonsoir
a) 2 ( x + 3) = - 5
2 x + 6 = - 5
2 x = - 5 - 6
2 x = - 11
x = - 11/2 = - 5.5
b) x ( 1 - x ) = 3 - x²
x - x² = 3 - x²
- x² + x² + x = 3
x = 3