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OpenStudy (anonymous):
f(x)= -x^2 + 2x + 3 find the x intercepts
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OpenStudy (solomonzelman):
set it equal to zero.\[-x^2 + 2x + 3=0\]everything times -1\[x^2 - 2x - 3=0\]\[(x+1)(x-3)=0\]\[x=-1~~~~~~~and~~~~~~~x=3\]
OpenStudy (anonymous):
thank you
OpenStudy (solomonzelman):
Anytime!
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