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8 March, 06:37

One of the solutions to x2 - 2x - 15 = 0 is x = - 3. what is the other solution?

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  1. 8 March, 10:18
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    X² - 2x - 15 = 0 comparing to ax² + bx + c = 0, a = 1, b = - 2, c = - 15.

    sum of roots = - b/a = - (-2) / 1 = 2

    -3 + other solution = 2

    other solution = 2 + 3

    other solution = 5
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