2a2 + 6a - 80 এর একটি উৎপাদক কোনটি?
Solution
Correct Answer: Option D
2a2 + 6a - 80
=2(a2 + 3a - 40)
=2(a2 + 8a - 5a - 40)
=2{a(a + 8) - 5(a + 8)}
=2(a + 8)(a + 5)
=2(a2 + 3a - 40)
=2(a2 + 8a - 5a - 40)
=2{a(a + 8) - 5(a + 8)}
=2(a + 8)(a + 5)
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