If x + y = 13 and xy = 40 then what is x² + y²?
यदि x + y = 13 और xy = 40 हो तो x² + y² का मान क्या होगा?
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Correct Answer
B. 89 / 89
Explanationx² + y² = (x + y)² - 2xy = 169 - 80 = 89.
x² + y² = (x + y)² - 2xy = 169 - 80 = 89।