Question

(x-4)²-(x-1)² queria o calculo

Answer 1

(x-4)²=(x-4)*(x-4)=x*(x-4)-4*(x-4)=x²-4x-4x+16=x²-8x+16

(x-1)²=(x-1)*(x-1)=x*(x-1)-1*(x-1) =x²-x-x+1=x²-2x+1

(x-4)²-(x-1)²  = x²-8x+16 -[ x²-2x+1]

=x²-8x+16-x²+2x-1 =-6x+16