A+b=3 A2+b2 =39 find ab

1.	A+b=3 A2+b2 =39 find ab
Answer» A + B = 3........(1)A² + B² = 39 ...... (2)We know that (a + b )² = a² + b² + 2ab3² = 39 + 2abFrom ( 1 ) and ( 2 ) 9 = 39 + 2ab2ab = 39 - 92ab = 30ab = 30/2ab = 15

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