Question

Find the product of (3×-y)and(×+y)​

Answer 1

Step-by-step explanation:

We simply substitute x=4,y=5 in the given product −3y(xy+y

2

) as follows:

−3y(xy+y

2

)

=−(3×5)((4×5)+5

2

)

=−15(20+25)

=−15×45

=−675

Hence, −3y(xy+y

2

)=−675 when x=4,y=5.

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Answer 2

Answer:

$(3x - y)(x + y)$

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

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