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Sunny
Sunny asked in Science & MathematicsMathematics · 5 years ago

Factor trinomial X^2+2x-3?

3 Answers

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  • alaur4
    5 years ago

    (x - 1)(x + 3)

    For this case, look at the +2x & -3 in the given trinomial and ask yourself: what numbers add up to make a sum of +2 and multiply to make -3? The numbers are -1 and 3.

    -1 + 3 = 2 and -1 x 3 = -3

    You have two x's from the x^2 and you have your numbers now, so factored would be: (x - 1)(x + 3)

  • ?
    Lv 7
    5 years ago

    　

    x² + 2x − 3 = (x − 1) (x + 3)

  • Michael
    Lv 7
    5 years ago

    Well,

    x^2 + 2x - 3 = (x - 1)(x + 3)

    1 is obvious root ..., the other is : c/a = -3/1

    hope it' ll help !!

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