If a+b =5, a^2 +b^2 =13 , then the value of ab (where au003eb) is - – McqOptions

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1.	If a+b =5, a^2 +b^2 =13 , then the value of ab (where au003eb) is -
A.	-2
B.	-6
C.	1
D.	8
Answer» D. 8

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