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3x(x²-2)
_____________
b)
2√2x³y² - √2 *√3x²y=
√2x²y(2xy-√3)
_________________
c)
2xy(a-2b+3c)
___________________
d)
2xy²(3x²+x-2y)
____________________
e)
4xy(x+2y-3z)
____________________
f)
3x²(3x²-2xy+4y²)
______________________
g)
(x-2y)[x+3y-(x-5y)]=
(x-2y)(x+3y-x+5y)=
(x-2y)*8y
___________________
h)
(2x-1)(x-7)(x-5)+(x-7)(x-1)(x-5)=
(x-7)(x-5)[2x-1+(x-1)]=
(x-7)(x-5)(2x-1+x-1)=
(x-7)(x-5)(3x-2)