Question

giúp mình với mình tick và theo dõi cho

Answer 1

a: =(a^2+2ab+b^2)+2(a+b)+1

=(a+b)^2+2(a+b)+1

=(a+b+1)^2

c: =3x(x-2y)-6y(x-2y)

=(x-2y)*3*(x-2y)

=3(x-2y)^2

g: =(x^3+8)-4x^2-8x

=(x+2)(x^2-2x+4)-4x(x+2)

=(x+2)(x^2-2x+4-4x)

=(x+2)(x^2-6x+4)

b: \(=ax^2+bx^2-ax-bx+a+b\)

=x^2(a+b)-x(a+b)+(a+b)

=(a+b)(x^2-x+1)

d: =(x-y)^2-(m-n)^2

=(x-y-m+n)(x-y+m-n)

f: =(2ab)^2-(a^2+b^2-1)^2

=(2ab-a^2-b^2+1)(2ab+a^2+b^2-1)

=[1-(a-b)^2][(a+b)^2-1]

=(a+b+1)(a+b-1)(1-a+b)(1+a-b)