Question
Download Solution PDFयदि p + q = 6 और pq = 4 है, तो \(3\left( {{p^3} + {q^3}} \right)\) का मान क्या है?
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFदिया गया है:
p + q = 6
pq = 4
प्रयुक्त अवधारणा:
(a + b)3 = a3 + b3 + 3ab(a + b)(a + b)3 = a3 + b3 + 3ab(a + b)
गणना:
(p + q)3 = p3 + q3 + 3pq(p + q)
(6)3 = p3 + q3 + 3x4(6)
p3 + q3 = 216 - 72
p3 + q3 = 144
अब,
3(p3 + q3 ) = 3 x 144
= 432
अतः सही उत्तर '432' है।
Last updated on Jul 21, 2025
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