Question

If a2+b2=13 and ab=6find a+b
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Answer 1

Answer:

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Answer 2

a²+b²=13

ab=6

a+b=?

By (a+b)²=a²+b²+2ab,we get----

(a+b)²=13+2(6)

(a+b)²=25

a+b=5