Bjr
A = (8x-5)(2x+1)-(2x+1)²+5(2x+1)(4x-7)
A = (2x+1)×(8x−5 −2x−1+5(4x-7))
A = (2x+1)×(8x-5-2x-1+20x-35)
A = (2x+1)×(26x-5-1-35)
A = (2x+1)×(26x-41)
B = (5x-4)²-(3x+8)²
B = (5x-4-(3x+8))×(5x-4+(3x+8))
B = (5x-4-3x-8)×(5x-4+(3x+8))
B = (5x-4-3x-8)×(5x-4+3x+8)
B = (2x 4-8)×(5x-4+3x+8)
B = (2x-12)×(5x-4+3x+8)
B = (2x-12)×(8x-4+8)
B = (2x-12)×(8x+4)
B = 2(x-6)×(8x+4)
B = 2(x-6)×4(2x+1)
B = 2×4(x-6)×(2x+1)
B = 8(x-6)×(2x+1)
C = je pense que vous savez le faire maintenant !
❤
