PLEASE HELP ME
Where does the graph of y=2x^2 - 9x -5 cross the x-axis?

Question

PLEASE HELP ME
Where does the graph of y=2x^2 - 9x -5 cross the x-axis?

anonymous · Answer

crosses the $x$ axis where 
$$2x^2-9x-5=0$$ can you solve it?

anonymous · Answer

not too bad because this one factors as $(x-5)(2x+1)=0$

anonymous · Answer

@satellite73 i need like two points

anonymous · Answer

yes you do

anonymous · Answer

solve $x-5=0$ and solve $2x+1=0$

anonymous · Answer

These are the answer choices 
-1/2 ,0 and 5,0
1/2,0 and -5,0
-5/2,0 and 1,0
5/2,0 and -1,0

anonymous · Answer

Ohhhhh ok

anonymous · Answer

if it is on the $x$ axis the second coordinate is surely 0
question is what is the first coordinate
i am sure you can solve $x-5=0$ right?

anonymous · Answer

Ok so one of the xs is 5

anonymous · Answer

yes
$(5,0)$ is where it crosses $x$ axis
also $(-\frac{1}{2},0)$

anonymous · Answer

i think it might have been confusing because they wanted a coordinate rather than just the $x$ value

anonymous · Answer

Thank u  so much @satellite73