Question

1. (x+3) la a 2-x(x+6)=
2. 25-x la a 2=
xy-3y-4y+12=
16x la a 2 -8x+1=

Answer 1

1.(x+3)^2-x(x+6)=x^2+2x*3+3^2-x^2-6x=9. 2.a)25-x^2=5^2-x^2=(5+x)(5-x). b)y(x-3)-4(y-3) c)16x^2-8x+1=(4x-1)^2