Réponses

2014-01-23T20:39:02+01:00
A= -4x + 10 X 2+8x
A= -4x + 20 + 8x
A= 4x + 20
B= (-4x + 10 ) X2 + 8x
B= 2 + 8x (-4x + 10)
B= -8x +20 - 32x² + 80x
B= -32x² + 72x + 20