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OpenStudy (anonymous):
use the quadratic formula to find the zeros of f. f(x) = -2x2 - 9x + 18
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OpenStudy (anonymous):
just to clarify thats -2x^2
OpenStudy (anonymous):
-2x^2-9x+18=0 (-2x+3)(x+6)=0 x=3/2 and x=-6
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