Question

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Answer 1

dài v

Answer 2

a) x(x-y)+(x-y)=(x+1)(x-y)

b) 2x+2y -x(x+y)= 2(x+y)-x(x+y)=(2-x)(x+y)

Answer 3

c)\(\left(2x+3\right)^2+2\left(2x+3\right)=\left(2x+3\right)\left(2x+2+3\right)=\left(2x+3\right)\left(2x+5\right)\)

d)\(\left(x-2\right)\left(x-1\right)-4\left(x-2\right)=\left(x-2\right)\left(x-1-4\right)=\left(x-2\right)\left(x-5\right)\)

e)\(x+y-x^2y-xy^2=\left(x-x^2y\right)+\left(y-xy^2\right)=x\left(1-xy\right)+y\left(1-xy\right)\)

\(=\left(x+y\right)\left(1-xy\right)\)

 

Answer 4

g, = (x+2y)(4x+3)

h, = (2x+1)(10-3x)

i, = xy(x+1)[(xy+1)+2]

j, = (2-z)(x²+y²-1)

k, = 2(x+3)²

f = 5(x-y)(x-2)