Question

if a+b=3 and ab=2 then find the value of a²+b²​

Answer 1

Answer:

(a+b)²=a²+b²+2ab

(3)²=a²+b²+2×2

a²+b²=9-4

a²+b²=5

Answer 2

Answer:

=(a+b)^2-2ab

=(3)^2-2*2

=9-4

=5