Question

2
If (a+b)=9 and ab=6 then find the value
a2+b2
​

Answer 1

Step-by-step explanation:

By using identity

(a+b)² = a²+b²+2ab

Substituting the values

9² = a²+b²+2(6)

81 = a²+b²+12

81-12 = a²+b²

a²+b² = 69

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