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solve and check each of the following quadratic equation
(1)x^2+16x=36
(2)x^2=10x-16
(3)3x=x^2-4

  • math -

    I'll do one by completing the square. Use the same method for the others. Come on back if you run into trouble.

    x^2 + 16x = 36
    x^2 + 16x + 64 = 36+64
    (x+8)^2 = 100
    x+8 = ±10
    x = -8 ± 10
    x = -18,2

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