136

2x+2y=2(x+y)                   6a-3=3(2a-1)

ax-ab=a(x-b)                     2a+6ab=2a(1+3b)

a²+a=a(a+1)                      3x³-xy²=x(3x²-y²)

ax+bx=x(a+b)                   5a³+10²+15a=5a(a²+2a+3)

138

2a+4b=2(a+b)                      ba-b=b(a)              6x-2=3(x)

yx+2y=y(x+2)       3a-12b=4(a-b)                   7x-28xy=7x(4-y)

139

Xy(a+b)                  (a+b)*(a-b)

3n(2)                      x(y-3-a

1b(2a-3)                                b(a-1)

2xy(7x)                  a(a-b)

2x(x+3y)                               a1(-2x)

141

1b(a)                      ab(3a)

Ab(2x)                   a(3+1)

2nm(x-1)               ab(x)

142

A(2x-3a²-4a)                         x(7x²+4-1-2x)

X⁶(3-2+4qh)             M(2-7+4-3-8

A(2+1+3+5a+2)      C(3-2-1-7+2)

Mn(2-3-5)             P(8-4+8)