Question

a-b=4 and a+b6 find a2+b2,ab

Answer 1

i think ur qn is
a-b=4 and a+b=6
now
multiply both
(a-b)(a+b)=24
a^2-b^2=24
a^2= 24+b^2.... (1)

now
adding both
2a=10
a=5
putting value of a in (1)
we get
b=1

so
a^2+b^2=(5)^2+(1)^2
=26
and
ab= 5
hope this will help you...