If x + y = 12 and xy = 27 then what is x² + y²?
यदि x + y = 12 और xy = 27 हो तो x² + y² का मान क्या होगा?
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Correct Answer
C. 90 / 90
Explanationx² + y² = (x + y)² - 2xy = 144 - 54 = 90.
x² + y² = (x + y)² - 2xy = 144 - 54 = 90।