Question

i want all the answer for this question I will mark it as branlist answer and and I will give 100 points please help​

Answer 1

Answer:

1-a=-12

by putting the value of x =-1÷2

3- 50

by putting the valuevof x=-1

4- 999919

by using the identity (x-y) (x+y)

5-4x×4x-y×y

7(x)8+(1÷x)8

please mark branliest answer

Answer 2

Answer:

here is answer in the photo click in the photo the answer will get