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Which shows one way to determine the factors of x3 – 9x2 + 5x – 45 by grouping? x2(x – 9) – 5(x – 9) x2(x + 9) – 5(x + 9) x(x2 + 5) – 9(x2 + 5) x(x2 – 5) – 9(x2 – 5)

Whitney Matthews

in Mathematics

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Kyle Mckinney on February 4, 2019

X3 - 9x2 + 5x - 45x2(x - 9) - 5(x - 9) ⇒ x3 - 9x2 - 5x + 45 INCORRECTx2(x + 9) - 5(x + 9) ⇒ x3 + 9x2 - 5x - 45 INCORRECTx(x2 + 5) - 9(x2 + 5) ⇒ x3 + 5x - 9x2 - 45 CORRECTIt just needs to be reorganized.x(x2 - 5) - 9(x2 - 5) ⇒ x3 - 5x - 9x2 + 45 INCORRECT


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