7(a-1)+x(a-1)
=(7+x)(a-1)
3(a-b)²+6(a-b)
=(a-b)(3(a-b)+6)
=(a-b)(3a-3b+6)
2(m-n)²-m(m-n)
=(m-n)(2(m-n)-m)
=(m-n)(2m-2n-m)
=(m-n)(m-2n)
x(x-y)²-y(y-x)²
=x(x-y)²-y(x-y)²
=(x-y)²(x-y)
m(a²+b²)+n(a²+b²)
=(a²+b²)(m+n)
7(a-1)+x(a-1)
=(7+x)(a-1)
3(a-b)²+6(a-b)
=(a-b)(3(a-b)+6)
=(a-b)(3a-3b+6)
2(m-n)²-m(m-n)
=(m-n)(2(m-n)-m)
=(m-n)(2m-2n-m)
=(m-n)(m-2n)
x(x-y)²-y(y-x)²
=x(x-y)²-y(x-y)²
=(x-y)²(x-y)
m(a²+b²)+n(a²+b²)
=(a²+b²)(m+n)