Question 1. Factorize -3 x 2 y − 3 x + 9 x y 2

1. ka + kb + kc type expressions

Question 1. Factorize  -3x ^{2}y-3x+9xy ^{2}

— algebra

Solution:

-3x ^{2}y-3x+9xy ^{2}

To factorize this expression we can see that 3x is common term among all three terms of the expression – which we take out and put brackets around the remaining factor.

-3x ^{2}y-3x+9xy ^{2}

=3x(-xy-1+3y ^{2})

 

Check:

so, 3x and (-xy-1+3y ^{2}) are two factors of the given expression. If both multiplied like below;

3x (-xy-1+3y ^{2})= 3x.(-xy)-3x.1+3x.3y ^{2} =-3x2y-3x+9xy ^{2}

i-e same original expression we get.

 

 

 



		
		
		
			

				
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