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alamojoe9
Group Title
Where does the graph of y = 2x2 + x − 15 cross the xaxis?
 2 years ago
 2 years ago
alamojoe9 Group Title
Where does the graph of y = 2x2 + x − 15 cross the xaxis?
 2 years ago
 2 years ago

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malexander Group TitleBest ResponseYou've already chosen the best response.0
is that 2x^2 +x 15 you mean @alamojoe9 ?
 2 years ago

malexander Group TitleBest ResponseYou've already chosen the best response.0
if so..its a parabola...Let y = 0 and solve for x...then once you get your two factors, you plug in those numbers into your parabola and that would give you the y for both points...then thats your answer
 2 years ago

dpaInc Group TitleBest ResponseYou've already chosen the best response.1
factor your expression and set to zero: 2x^2 + x 15 = 0 (2x  5)(x + 3) = 0 solve for x and that's where your graph crosses the x axis.
 2 years ago
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