Question

4. If a +b=5 and a-b=9; find :
(a) a^2 -b^2
(b) a² +b^2
(c) ab
5. If x + y =7/2 and xy =5/2 . find :
(a) x - y
(b) x^2-y^2
(C) x² + y^2
6.If a + =1/a= 6 and a #0; find:
(a) a^2 +1/a^2
(b) a - 1/a
(c) a^2-1/a^2

can someone solve these questions plz​

Answer 1

Step-by-step explanation:

hey mate please follow me because I need follower.

$\sqrt[ \sqrt[ \sqrt{ \sqrt[ \sqrt{ \sqrt[?]{?} } ]{?} } ]{?} ]{?} \times \frac{?}{?} \times \frac{?}{?}$