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OpenStudy (vanz):
Solve this equation by factoring or completing the square x^2-10x+21=0
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OpenStudy (anonymous):
(x-7)(x-3)
hero (hero):
x^2 - 10x + 21 = 0 x^2-7x-3x + 21 = 0 x(x-7)-3(x-7) = 0 (x-7)(x-3) = 0 x - 7 = 0 x = 7 x -3 = 0 x = 3 x = 3,7
OpenStudy (anonymous):
yeah. . . you identify the roots..
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