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29 October, 16:03

Use the discriminant to determine the number and type of solutions to the quadratic equation. Show all work for full credit! 2 + 8 = 13

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  1. 29 October, 16:15
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    The equation has two different real solutions

    Step-by-step explanation:

    The discriminant of the quadratic equation ax² + bx + c = 0 is Δ = b² - 4ac, it used to find the number and type of solutions

    Δ > 0, means two different real solutions Δ = 0, means one real solution Δ < 0, means no real solutions

    ∵ The equation is a² + 8a = 13

    - Put it in the form ax² + bx + c = 0

    - Subtract 13 from both sides

    ∴ a² + 8a - 13 = 0

    ∴ The coefficient of a² = 1, the coefficient of a = 8 and the

    numerical term = - 13

    ∵ Δ = (coefficient of a) ² - 4 (coefficient of a²) (numerical term)

    ∴ Δ = (8) ² - 4 (1) (-13)

    ∴ Δ = 64 + 52

    ∴ Δ = 116

    ∵ Δ > 0

    ∴ The equation has two different real solutions
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