The first step in the process for factoring the trinomial x2-3x – 40

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The first step in the process for factoring the trinomial x2-3x – 40

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Hưng Khoa 1 year 2021-08-24T03:59:54+00:00 1 Answers 0 views 0

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    2021-08-24T04:01:03+00:00

    We need two numbers that when multiplied will give you -40 and when added will give you -3:
    (x+5) (x-8) this is your answer. And you want to know the process Here it goes. And attached is a chart I made you so you can visually see what this process is telling you:
    1) identify a,b, and c in the trinomial ax^2 + bx+c (in your case it’s 1x^2-3x-40= x^2-3x-40)
    2) write down all factor pairs of c (numbers that multiplied produce -40)
    3) identify which factor pair from the previous step sums up to b
    4) Substitute factor pairs into two binomials

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Giải phương trình 1 ẩn: x + 2 - 2(x + 1) = -x . Hỏi x = ? ( )