Question
Download Solution PDFयदि x2 − 2xy = 84 और x − y = −10 है, तो y का मान क्या है?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिया गया:
x2 − 2xy = 84
x = y - 10
गणना:
प्रश्न के अनुसार,
x2 − 2xy = 84 ------------(1)
और x = y - 10
अब, समीकरण (1) में x = y - 10 रखने पर
(y - 10)² - 2y(y - 10) = 84
⇒y² - 20y + 100 - 2y² + 20y = 84
⇒- y² = 84 - 100
⇒ y² = 16
⇒ y = 4
इसलिए, अभीष्ट मान 4 है।
Last updated on Jul 17, 2025
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