Question

a+b=9 and ab=20 ho to A2+B2

Answer 1

Answer:

41

please mark it as brainliest answer please

Step-by-step explanation:

We have ab=20

so 2ab=40

now a+b=9

(a+b)²=(9)²

a²+2ab+b²=81

a²+b²=81-40. (2ab=40)

a²+b²=41