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Question
m2n2 + 14mnpq + 49p2q2 हा वर्ग विस्तार खालीलपैकी कोणत्या राशींचा आहे?
Options
(m + n) (p + q)
(mn − pq)
(7mn + pq)
(mn + 7pq)
MCQ
Solution
(mn + 7pq)
स्पष्टीकरण:
m2n2 + 14mnpq + 49p2q2
(a+b)2 = a2 + 2ab + b2
a2 = m2n2 ⇒ a = mn
b2 = 49p2q2 ⇒ b = 7pq
2ab = 2 × mn × 7pq = 14mnpq
(mn + 7pq)
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