(4x-1)²+2x(x-3)
= 16x² -8x +1 +2x² -6x
= 18x² -14x+1
Réponse :
(4x-1)²+2x(x-3)=
(16x²-8x+1)+(2x²-6x)=
16x²-8x+1+2x²-6x=
18x²-14x+1
(4x-1)²= (a-b)²= a²-2ab+b²
Explications :
