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Q: What is the factor of this trinomial 2x2 plus 5x -18?

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(x + 18)(x + 4)

If that's -18, the answer is (x - 3)(x + 6)

I hope you mean x3+2x2-9x+18. Treat the equation like two equations: x3+2x2 and 9x+18. Factor out x2 from the first equation, so x2(x+2). Factor out 9 from the second equation, so 9(x+2). Now, the whole equation. x2(x+2)-9(x+2). Factor out (x+2), so (x+2)(x2-9). (x2-9) factors into (x+3)(x-3). So, (x+2)(x+3)(x-3) is the complete factorization. Hope this helps.

simple trinomial is when you do not have a coefficient for example 4x^2+18+81 this is tricky trinomial x^2+5x-14 is a simple trinomial i wish that answers your question

-(x - 9)(x + 2)

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(x + 18)(x + 4)

If that's -18, the answer is (x - 3)(x + 6)

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