coincollector123 coincollector123

18-06-2021
Mathematics

contestada

Let $a$ and $b$ satisfy $ab=7$ and $a+b=5$. What is the value of $a^2 + b^2$?

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andrewyang1818 andrewyang1818

18-06-2021

Answer:

11

Step-by-step explanation:

(a+b)^2=a^2+b^2+2ab

a^2+b^2=(a+b)^2-2ab

=5^2-14

=11

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18-06-2021

The answer is 11 is correct for the answer

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