Mathematics
Crystalcruz77
2021-09-15 02:21:57
solve the equation by completing the square. round to the nearest hundredth if necessary. x^2+2x=8
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Sydneymayhew
2021-09-15 06:20:32

                      x² + 2x = 8                  x² + 2x - 8 = 8 - 8                  x² + 2x - 8 = 0           x² - 2x + 4x - 8 = 0 x(x) - x(2) + 4(x) - 4(2) = 0        x(x - 2) + 4(x - 2) = 0               (x + 4)(x - 2) = 0  x + 4 = 0    U    x - 2 = 0     - 4  - 4            + 2 + 2        x = -4               x = 2

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