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ID#4617 BCS General Math Preli (45)

p + q = 5 এবং p – q = 3 হলে $p^2 + q^2$ এর মান কত?
ক) 8
খ) 34
গ) 19
ঘ) 17

ব্যাখ্যা

আমরা জানি,
$2(p^2 + q^2) = (p + q)^2 + (p - q)^2$

$2(p^2 + q^2) = (5)^2 + (3)^2$
$2(p^2 + q^2) = 25 + 9$
$2(p^2 + q^2) = 34$
$p^2 + q^2 = \frac{34}{2}$
$p^2 + q^2 = 17$

উত্তর: ১৭
Resource Details
Exam BCS
Subject General Math
Chapter 12
Year 45

Discussion — BCS General Math Preli (45)

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