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3 years ago

Use the grouping method to factor the polynomial below completely 3x^3+9x^2+5x+15

Mathematics

1 answer:

Tomtit [17]3 years ago

6 0

Answer:

(x+3)( 3x^2 +5)

Step-by-step explanation:

3x^3+9x^2+5x+15

Split into two groups

3x^3+9x^2 +5x+15

Factor 3x^2 out of the first group and 5 out of the second group

3x^2 ( x+3) + 5(x+3)

Factor out x+3

(x+3)( 3x^2 +5)

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Use the grouping method to factor the polynomial below completely 3x^3+9x^2+5x+15​

Use the grouping method to factor the polynomial below completely 3x^3+9x^2+5x+15