Asked by Metilet
Factor the trinomial: 5x+7x-6
Answers
Answered by
Steve
You know it will have to have factors of the form
(5x + ?)(x + ?)
where the question marks multiply to 6, and one is plus, the other minus. Since you have +7x, it would seem that it will be
(5x-?)(x+?) so the 5 multiplies the "+" factor
(5x-3)(x+2) fits the bill, since 5*2 - 1*3 = +7
(5x + ?)(x + ?)
where the question marks multiply to 6, and one is plus, the other minus. Since you have +7x, it would seem that it will be
(5x-?)(x+?) so the 5 multiplies the "+" factor
(5x-3)(x+2) fits the bill, since 5*2 - 1*3 = +7
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