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11 July, 14:55

In factoring by grouping, what would you have for step 3 for the following?

Step 1: x^3 + 5x^2 + 4x+20

Step 2: x^2 (x+5) + 4 (x+5)

Step 3:?

+1
Answers (2)
  1. 11 July, 15:04
    0
    Factor out the x+5

    (x+5) (x^2+4)

    Step-by-step explanation:

    Step 1: x^3 + 5x^2 + 4x+20

    Step 2: x^2 (x+5) + 4 (x+5)

    Step 3: Factor out the x+5

    (x+5) (x^2+4)
  2. 11 July, 15:22
    0
    Step 3: (x^2 + 4) (x + 5)

    Step-by-step explanation:

    Step 1: x^3 + 5x^2 + 4x+20

    Step 2: x^2 (x+5) + 4 (x+5)

    Step 3: (x^2 + 4) (x + 5)
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