Factoriser chacune des expression littéral suivantes. A= 16xau carré +24x+9 B= (6x-3)*(-x+2)+(-2x+4)*(6x-3) C=-36xau carré +25 D=-(-10x-9) au carré +9 E= -(6x+8

A=16x²+24x+9=(4x+3)²
B=(6x-3)*(-x+2)+(-2x+4)*(6x-3)=(6x-3)(-x+2-2x+4)=(6x-3)(-3x+6)
C=-36x²+25=-(36x²-25)=-(6x+5)(6x-5)
D=-(10x-9)²+9=-[(10x-9)²-9]=-(10x-9+3)(10x-9-3)=-(10x-6)(10x-12)
E=-(6x+8)+(10x+9)*(6x+8)=(6x+8)(10x+9+1)=(6x+8)(10x+10)
F=(-9x+5)*(4x+4)+(-9x+5)²=(-9x+5)(4x+4-9x+5)=(-9x+5)(-5x+9)

A=16xau carré +24x+9
=(4x)²+ 2 x 12x +(3)²
=(4x+3)
B=(6x-3)*(-x+2)+(-2x+4)*(6x-3)
=(6x-3)(-x+2-2x+4)
=(6x-3)(6-3x)
=3(2x-1) x 3(2-x)
=9(2x-1)(2-x)