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OpenStudy (anonymous):
-x^2+3x+18=0
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OpenStudy (haseeb96):
-x^2+3x+18=0 x^2-3x-18=0 x^2-3x+6x-18=0 x(x-3)+6(x-3)=0 (x+6)(x-3)=0 either x+6=0 or x-3=0 x=-6 or x=3
jhonyy9 (jhonyy9):
@Haseeb96 you dont like adding some explication for better understanding - please ? - so and for roots i think not ,,or" because every two numbers are roots of this quadratic equation yes ?
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