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Novosadov [1.4K]
3 years ago
8

Factor -4d 3 + 28d 2 - 4d. -4d(d2 - 7d + 1) -4(d2 - 7d + 1) -4(d3 - 7d2 + 1)

Mathematics
1 answer:
mamaluj [8]3 years ago
7 0

"-4d 3 + 28d 2 - 4d" might mean more to you as well as to others if typed as

-4d^3 + 28d^2 - 4d. The " ^ " symbol calls for exponentiation, whereas d 3 is meaningless.

Have a close look at -4d^3 + 28d^2 - 4d. Notice that -4d is a factor of every term? Thus, -4d^3 + 28d^2 - 4d = -4d(d^2 - 7d + 1. Now all we have to do is factor d^2 - 7d + 1

Actually, the factors -4d and d^2 - 7d + 1 are all we need, and the first answer is the correct one.

An important skill here is identifying common factors in a series of terms.


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