Question

and
if atb=9
then find the
ab=20
value of a² + b²​

Answer 1

Answer:

41

Step-by-step explanation:

Given- a+b=9

ab=20

To find- a²+b²

using formula (a+b)²= a²+b²+2ab

putting values,

(9)²= a²+b²+2(20)

81= a²+b²+40

81-40=a²+b²

41= a²+b²

hence value of a²+b² is 41

Hope it helped!!