Question

a - b = 1 ; a ^ 2 - b ^ 2 = 7 an a+b=?

Answer 1

Answer:

7

Step-by-step explanation:

GIVEN:-

a-b=1

a²-b²=7

TO FIND:-

a+b

SOLUTION:-

using identity:- a²-b²=(a+b)(a-b)

                          7=(a+b)(1)

                        7=a+b

                         Answer:- a+b=7

Answer 2

Step-by-step explanation:

a-b= 1

= 4-3=1

a²-b²=7

4²-3²

16-9

=7

so that

a+b=?

= 4+3

= 7