Question

please tell the answer ihave test tomorrow

Answer 1

(i)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

(ii) a^2 - b^2 = (a+b) (a-b)

therefore we know the value of a+b and a-b,

=1.5 x .9

=1.17

Hope this helped you