Question

Find the product. (x - 7)(y - 9)

Answer 1

(x - 7)(y - 9)

x*(y - 9) - 7*(y - 9)

x*y - x*9 - 7*y -7*(-9)

xy - 9x - 7y + 63

That's the product.

Answer 2

Answer: $xy-9x-7y+63$

Step-by-step explanation:

The given expression: $(x - 7)(y - 9)$

We know that the distributive property is given by :-

$a(b+c)=ab+ac$  [Left side]

$OR\\\\(b+c)a=ba+ca$  [Right side]

So applying the distributive property(Left sides) in the above expression, we get

$(x - 7)y - (x - 7)9)$

Again applying the distributive property (Right side) in the above expression, we get

$= xy - 7y- 9x +(7)(9)\\\\xy-9x-7y+63$