x এর সকল মানের জন্য (ax +২) (bx +৭) =১৫ +cx +১৪ এবং a+b =৮ হলে, c এর মান কত হতে পারে?
A. ৩ ও ৫
B. ৬ ও ৩৫
C. ১০ ও ২১
D. ৩১ ও ৪১
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সঠিক উত্তরঃ
D.
৩১ ও ৪১
Explanation:
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