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19 July, 09:34

2) Dada a equação x2 - 4x - 12, faça o que se pede.

a) Determine suas raízes utilizando a fórmula resolutiva.

b) Qual a menor raiz inteira dessa equação?

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  1. 19 July, 09:59
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    a) x1 = 6 and x2 = - 2

    b) - 2

    Step-by-step explanation:

    a)

    To find the roots of the quadratic equation, we can use the Bhaskara's formula:

    Delta = b^2 - 4ac

    Delta = (-4) ^2 - 4*1 * (-12) = 64

    sqrt (Delta) = 8

    x1 = (-b + sqrt (Delta)) / 2a

    x1 = (4 + 8) / 2

    x1 = 6

    x2 = (-b - sqrt (Delta)) / 2a

    x2 = (4 - 8) / 2

    x2 = - 2

    b)

    The roots are 6 and - 2, so the smaller root is - 2
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