resolve into fector
x²( 3z-2y) + 4y²(x+3z)+9z²(x-2y)-12xyz
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let, x=a , -2y=b,3z=c
.°. x²(3z-2y)+4y²(x+3z)+9z²(x-2y)-12xyz
= a²(b+c)+b²(c+a)+c²(a+b)+2abc
= (b + c) (c+a) (a+b)
= (3z-2y) (3z+z) (x-2y) ( putting the value of a,b,c )
.°. x²(3z-2y)+4y²(x+3z)+9z²(x-2y)-12xyz
= a²(b+c)+b²(c+a)+c²(a+b)+2abc
= (b + c) (c+a) (a+b)
= (3z-2y) (3z+z) (x-2y) ( putting the value of a,b,c )
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