If x + y = 18 and xy = 72 then what is x² + y²?
यदि x + y = 18 और xy = 72 हो तो x² + y² का मान क्या होगा?
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Correct Answer
C. 180 / 180
Explanationx² + y² = (x + y)² - 2xy = 324 - 144 = 180.
x² + y² = (x + y)² - 2xy = 324 - 144 = 180।