Question

If a+b=5 and ab =2 find the value of asq.+ bsq.​

Answer 1

Answer:

(a+b)2=a2+b2+2ab

Step-by-step explanation:

5sq.=asq.+bsq.+2*2

25=asq+bsq+4

asq.+bsq.=25-4

asq.+bsq.=21

Answer 2

Step-by-step explanation:

(a+b)^2= a^2+b^2+2ab (identity)

Given:

a+b=5, ab=2

After keeping the values=> 5^2=a^2+b^2+2*2

=> 25=a^2+b^2+4

a^2+b^2=25-4

a^2+b^2=21

HOPE THIS HELPS!!!!!!