Question

2.
If ab = 6 and a + b = 5, then the value of a^2 + b^2 is
1) 11
2) 12
3) 13
4) 16​

Answer 1

Answer:

16

Step-by-step explanation:

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Answer 2

Answer:

Formula

(a+b)

2

=a

2

+b

2

+2ab

=>a

2

+b

2

=(a+b)

2

−2ab

Given, a+b=5 and ab=6

So, a

2

+b

2

=(a+b)

2

−2ab=5

2

−2×6=25−12=13