Please help. I will mark you as brainliest ! If x-3 is a factor of P(x)=x^3- 7x²+15x – 9, which of the following represents the

Question

Please help. I will mark you as brainliest !

If x-3 is a factor of P(x)=x^3- 7x²+15x – 9, which of the following represents the complete factorization for P(x)?
A. (x – 3)(x+4)(x+1)
B. (x – 3)(x+3)(x+1)
c. (x – 3)(x+3)(x-1)
D. (x – 3)(x – 3)(x-1)

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Ngọc Diệp 1 year 2021-08-05T00:52:31+00:00 2 Answers 7 views 0

Answers ( )

    0
    2021-08-05T00:53:36+00:00

    Answer:

    [tex]x \times x + x \times 4 + x \times x + x \times 1 – 3 \times x + 3 \times 4 + 3 \times x + 3 \times 1 [/tex]

    0
    2021-08-05T00:54:10+00:00

    Answer:

    D. (x-3)(x-3)(x-1)

    Step-by-step explanation:

    (x³-7x²+15x-9)/(x-3) = x²-4x+3 (see attached)

    x²-4x+3=(x-1)(x-3) (factorisation)

    ∴x³-7x²+15x-9=(x-3)(x-3)(x-1)

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