Question

Which of the following is a common factor of 15x²y+21xy?

Answer 1

Answer:

15x²y+21xy

= 3xy(5x+7)

Answer 2

Given : 15x²y+21xy

To Find : common factors

Solution:

Factorization is finding factors which when multiplied together results in the original number.

15x²y+21xy

15x²y = 3 * 5 * x * x * y

21xy  = 3 * 7  * x * y

common factors are 3 , x , y

Taking 3xy common

3xy ( 5x  + 7y)

3xy is common factor

common factors can be  3  ,  x ,  y  , 3x , 3y  , xy  , 3xy

15x²y+21xy  = 3xy ( 5x  + 7y)

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