mathematics is hard, please help

label Mathematics
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Solve the equation: -0.25x2 + 1.5 = -10.75


Mar 29th, 2015

- 0.25x^2 + 1.5 = -10.75

- 0.25x^2 + 1.5 + 10.75 = 0

- 0.25x^2 + 12.25 = 0

- 0.25x^2 = - 12.25

x^2 = - 12.25 / - 0.25

x^2 = 49

√x^2 = √49

x = +7    or    x = - 7

Mar 29th, 2015

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