Question

. If a - b = 0.9 and ab = 0.36; find :
(i) a + b
(ii) a^2– b2​

Answer 1

Answer:

a-b=0.9

a=0.9+b. ___1

ab=0.36

(0.9+b)b=0.36

b^2+0.9b=0.36

b^2+(9/10)b=0.36

take L.C.M

10b^2+9b=3.6

thus you got quadretic equation

simplyfy it , you will get the value of b

substitute it in equation 1

you will get the value of A