Question

x²-9y²+3x+9y=
ax+bx+ay+by=
ax-bx+ay-by=
a+ax+b+bx=
2x+2y+ax+ay=
-4x-4y+ax+ay=
x²+x-2x-2
AJUTOR

Answer 1

$x^{2} -9y ^{2} +3x+9y=(x+3y)(x-3y)+3(x+3y)</strong> <strong>  ax-bx+ay-by=x(a-b)+y(a-b)=(x+y)(a-b)</strong> <strong>  a+ax+b+bx=a(1+x)+b(1+x)=(a+b)(1+x)</strong> <strong>  2x+2y+ax+ay=2(x+y)+a(x+y)=(2+a)(x+y)</strong> <strong>  -4x-4y+ax+ay=-4(x+y)+a(x+y)=(-4+a)(x+y)</strong> <strong>   x^{2} +x-2x-2=x(x+1)-2(x+1)=(x-2)(x+1)$