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6 December, 16:10

Use the grouping method to factor this polynomial completely.

2x3 + 6x2 + 5x + 15.

+3
Answers (2)
  1. 6 December, 16:33
    0
    (x+3) (2x^2+5)
  2. 6 December, 16:37
    0
    2x³ + 6x² + 5x + 15 = (x+3) (2x²+5)

    Step-by-step explanation:

    2x³ + 6x² + 5x + 15=

    = (2x³ + 5x) + (6x² + 15)

    =x (2x²+5) + 3 (2x²+5)

    = (x+3) (2x²+5)
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