Bonjour , je ne sais pas trop comment développer et reduire A: 8+2*(x-3) B: 5x(2x-6) C: (-4-3x)*2 D: -3(4-xau carré)E: 10x-3(4x-7)+9 F: (4xau carré-3)*2+4x
merci de m'eclairer....
merci de m'eclairer....
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BonjourA=8+2(x-3)=8+2x-6=2+2x=2x+2
B=5x(2x-6)=10x²-30x
C=(-4-3x)*2=-8-6x=-6x-8
D=-3(4-x²)=-12+3x²=3x²-12
E=10x-3(4x-7)+9=10x-12x+21+9=-2x+30
F=(4x²-3)*2+4x=8x²-6+4x=8x²+2x-6
A = 8 + 2(x - 3)
A = 8 + 2 * x + 2 * -3
A = 8 + 2x - 6
A = 2x + 2
B = 5x(2x - 6)
B = 5x * 2x + 5x * -6
B = 10x² - 30x
C = 2(-4 - 3x)
C = 2 * -4 + 2 * -3x
C = - 8 - 6x soit - 6x - 8 en ordonnant.
D = -3(4 - x²)
D = -3 * 4 - 3 * - x²
D = 3x² - 12
E = 10x - 3(4x - 7) + 9
E = 10x - 3 * 4x - 3 * -7 + 9
E = 10x - 12x + 21 + 9
E = -2x + 30
F = (4x² - 3)2 + 4x
F = 2 * 4x² + 2 * -3 + 4x
F = 8x² - 6 + 4x