1) (4x-3)^2-6x(4-x)= 2) (a-x)^2+(a+x)^2= 3) 2(x+6)^2-(20x+70)=

Question

1) (4x-3)^2-6x(4-x)=
2) (a-x)^2+(a+x)^2=
3) 2(x+6)^2-(20x+70)=

Answer 1

1)16x^2-25x+9-24x+6x^2
22x^2-48x+9;
2)2(a-x)^2
2(a^2-2ax+x^2)
2a^2-4ax+2x^2
3)2x^2+24x+72-20x-70
2x^2+4x+4