Bài 2:
a: =>3x(x-2)=0
=>x=2 hoặc x=0
b: =>(x-5)(x-1)=0
=>x=5 hoặc x=1
c: =>(x+2)(x+5)=0
=>x=-5 hoặc x=-2
d: =>(x-3)(x-2)=0
=>x=2 hoặc x=3
a: =>3x(x-2)=0
=>x=2 hoặc x=0
b: =>(x-5)(x-1)=0
=>x=5 hoặc x=1
c: =>(x+2)(x+5)=0
=>x=-5 hoặc x=-2
d: =>(x-3)(x-2)=0
=>x=2 hoặc x=3
1.
a)\(x^2-4x=x\left(x-4\right)\)
b)\(4x^3y-8x^2y^2+4xy^3=4xy\left(x^2-2xy+y^2\right)=4xy\left(x-y\right)^2\)
c)\(x^2-8xy+16y^2-25=x\left(x-8y\right)+\left(4y+5\right)\left(4y-5\right)\)
d)\(x^2-8x+12\)
\(=x^2+8x+16-4\)
\(=\left(x-4\right)^2-2^2\)
\(=\left(x-2\right)\left(x-6\right)\)
e)\(x^2-x-6\)
\(=\left(x-3\right)\left(x-2\right)\)
f)\(3x^2+5x-8\)
\(=\left(x-1\right)\left(3x+8\right)\)





