Which of the following represents the factored form of f (x) = x3 - 81x?

f (x) = x (x - 9) 2

f (x) = (x + 9) (x - 9)

f (x) = x (x + 9) (x - 9)

f (x) = x (x2 - 9)

Question

Mathematics

Amos

2 July, 20:26

Which of the following represents the factored form of f (x) = x3 - 81x?

f (x) = x (x - 9) 2

f (x) = (x + 9) (x - 9)

f (x) = x (x + 9) (x - 9)

f (x) = x (x2 - 9)

+3

Answers (2)

Know the Answer?

Rey Gill · Answer 1

F (x) = x^3 - 81x

f (x) = x (x^2) + x (81)

f (x) = x (x^2 - 81)

f (x) = x (x^2 + 9x - 9x - 81)

f (x) = x (x (x) + x (9) - 9 (x) - 9 (9))

f (x) = x (x (x + 9) - 9 (x + 9))

f (x) = x (x - 9) (x + 9)

The answer is C.

Samuel Ruiz · Answer 2

You're original equation has a - 81, so the factored form will have to have a positive and negative multiplying one another to achieve that ...

f (x) = x (x + 9) (x - 9)

Which of the following represents the factored form of f (x) = x3 - 81x?f (x) = x (x - 9) 2f (x) = (x + 9) (x - 9)f (x) = x (x + 9) (x - 9)f (x) = x (x2 - 9)

Which of the following represents the factored form of f (x) = x3 - 81x?

f (x) = x (x - 9) 2

f (x) = (x + 9) (x - 9)

f (x) = x (x + 9) (x - 9)

f (x) = x (x2 - 9)