(p+q) =5, pq=4 হলে (p-q) এর ধনাত্মক মান কত?
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Step-by-step explanation:
দেওয়া আছে,
p+q = 5.
pq=4
এখন,
(p-q) ²=(p+q)²+4pq
=(5) ²+4(4)
=25+16
=41
p-q= =root 41
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