If a² + b² = 34 and ab = 15, what is a + b?

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a² + b² = 34, ab= 15 ആയാൽ a + b എത്ര?

A64

B49

C8

D7

Answer:

C. 8

Read Explanation:

a² + b² = 34, ab= 15 (a + b)² = a² + b² + 2ab = 34 + 2 × 15 = 34 + 30 = 64 a + b = √64 = 8

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