Question

if a+b=9 and ab=10, find the value a2+b2

Answer 1

A + B = 9

AB = 10

A² + B² = ?

(A+B)² = A ² + B² + 2 AB

(9)² = A² + B² + 2 ×(10)

81 = A² + B² + 20

81 - 20 = A² + B²

61 = A² + B²

HOPE IT HELPS !!

Answer 2

Step-by-step explanation:

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