and
if atb=9
then find the
ab=20
value of a² + b²
Answers
Answered by
4
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!!
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