Question

1)2a-ab
2)7am-7bm
3)2x(2)-4x(3)+10x(4)
4)a(5)+a(3)+2a(2)+2
5)x-4y+x(2)-16y(2)

Answer 1

2a-ab=a(2a-b)
.
7am-7bm=7m(a-b)
.
${a}^{5} + {a}^{3} + 2 {a}^{2} + 2 = {a}^{3} ( {a}^{2} + 1) + 2( {a}^{2} + 1) = ( {a}^{3} + 2)( {a}^{2} + 1)$
.
x-4y+x²-16y²=(x-4y)+(x-4y)(x+4y)=(x-4y)(1+x+4y)