SVP AIDER MOI! ON DONNE D = (2-5x)(4x+3)-(2-5x) au carré.. on dois développer et réduire ! ! ! ! ! (attention en développement -(2-5x)au carré)
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Verified answer
Bonsoird = ( 2 - 5 x) ( 4 x + 3) - ( 2 - 5 x)²
d = 8 x + 6 - 20 x² - 15 x - ( 4 - 20 x + 25 x²)
d = 8 x + 6 - 20 x² - 15 x - 4 + 20 x - 25 x²
d = - 45 x² + 13 x + 2
Verified answer
BonsoirD = (2-5x)(4x+3)-(2-5x)²
= 8x+6-20x²-15x -(4-20x+25x²)
= -20x²-7x+6 -25x²+20x-4
= -45x²+13x+2