Given that a - b = 3 and ab=5, find, without the use of a calculator, the value of a^2 +b^2?

asked Nov 17, 2022 229k views

1 vote

Given that a - b = 3 and ab=5, find, without the use of a calculator,
the value of a^2 +b^2?

by Deni

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Answer:

Explanation:

a-b=3 ab=5

a²+b² = (a-b)²+2ab ( a general formula)

= 3²+2×5

=9+10 = 19

Tobias Golbs answered Nov 22, 2022

6.6k points

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