Question

(ii) (x + 7y) (7x - y)​

Answer 1

Step-by-step explanation:

$(x+7y)(7x-y)$

Apply the distributive property by multiplying each term of x+7y by each term of 7x-y.

$7x^{2}-xy+49xy-7y^{2}$

Combine -xy and 49xy to get 48xy.

$7x^{2}+48xy-7y^{2}$

Answer 2

Answer:

7x^2+48xy-7y^2

Step-by-step explanation:

7x*x=7x^2

7x*7y=+49xy   -y*x=-xy        49xy-xy=+48xy

-y*+7y=7y^2

7x^2+48xy-7y^2

(^2 stands for squared)

Hope it helped