Medium Math Class 9 Level 9

If x + y = 16 and xy = 60 then what is x² + y²?

यदि x + y = 16 और xy = 60 हो तो x² + y² का मान क्या होगा?

A 116 / 116 B 126 / 126 C 136 / 136 D 146 / 146
Show answer and explanation
Correct Answer

C. 136 / 136

Explanation

x² + y² = (x + y)² - 2xy = 256 - 120 = 136.

x² + y² = (x + y)² - 2xy = 256 - 120 = 136।

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