Can you do more mathematics: factor by grouping: 5x^3 + 15x^2 + 2x +6 (&SHOW YOUR WORK)
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Can you do more mathematics: factor by grouping: 5x^3 + 15x^2 + 2x +6 (&SHOW YOUR WORK)

[From: ] [author: ] [Date: 12-07-06] [Hit: ]
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First separate the 4 terms in the middle and get (5x^3 + 15X) and (2x + 6)
Then factor each and get 5x^2(x + 3) and 2(x + 3)
The common term (x + 3 )can then be factored and you end up with (5x^2 + 2) (x + 3)

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5x^3 + 15x^2 + 2x +6
= 5x²(x+3) + 2(x+3)
= (5x²+2)(x+3)
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