Question

If a-b=4 & a+b=6; finda2+b2

Answer 1

Here a=5 & b=1 .Now putting the value of a & b

Answer 2

a-b=4
a+b=6
add the two equations
a-b+a+b=10
2a=10
a=5
similarly find. the value of b by putting in any of given equations
b=1
a2+b2=(a+b)whole square - 2ab
=(5+1)whole square- 10
=36-10
=26