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OpenStudy (anonymous):
x^2+20x=30 i need this square completed and its * two answers (*if answer is not an integer round to nearest tenth . thank you .!
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OpenStudy (anonymous):
idont understand the way the answers on that site are written .
OpenStudy (nikita2):
Oh, then use the formula: x1/x2 = -10 +/- sqrt(D), where D = (b/2)^2 - ab, where b = 20, a = 1, c = -30
OpenStudy (anonymous):
uhhhh im so lost i hate math
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