Question

If a-b=0.9 and ab=0.36 finf a+ b

Answer 1

Given a-b = o.9 and ab=0.36

Now a+b =root of (a+ b) whole sq

=Root of [(a-b)^2+ 4ab]

= Root of [(0.9)^2 + 4×0.36]

= Root of [0.81 + 1.44]

=Root of [ 2.25]

= 1.5

Therefore a+b = 1.5