Question

If a + b = 5 and ab = 10, then find the value of a² + b².​

Answer 1

Answer:

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Answer 2

Answer:

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

5^2 =a^2 +b^2+2×10

25=a^2+b^2+20

25-20=a^2+b^2

5=a^2+b^2

Hence your answer is 5

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