m2+8m+15 এর উৎপাদক কত ?

A m+5m-3
B m-nm+3
C m-nm-3
D (m+5)(m+3)

Correct Answer: (m+5)(m+3)

m2 + 8m + 15 = m2 + 5m + 3m + 15 = m(m + 5) + 3(m + 5) = (m + 5) (m + 3)
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