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tatyana61 [14]
3 years ago
11

It is given that a+b=6 and ab=7. Find the value of a^2 + b^2.

Mathematics
1 answer:
n200080 [17]3 years ago
4 0
Use the identity:-

a^2 + b^2  = (a + b)^2 - 2ab

Plugging in the given values;-

a^2 + b^2 = 6^2 - 2*7    =  36-14  = 22 Answer
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