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Mathematics 18 Online
OpenStudy (anonymous):

Identify the x intercepts in the graph y=3x^2+19x-40

OpenStudy (mertsj):

Find the x intercepts by letting y = 0 and solving for x

OpenStudy (anonymous):

anyone else want to take a crack at it

OpenStudy (mertsj):

Did you set it equal to 0?

OpenStudy (mertsj):

And then factor it.

OpenStudy (anonymous):

Can't figure it out HELP!!!

OpenStudy (mertsj):

Can you multiply 3 times -40?

OpenStudy (anonymous):

Than what

OpenStudy (anonymous):

or whats the answer

OpenStudy (mertsj):

What did you get for 3 times -40?

OpenStudy (anonymous):

-120

OpenStudy (mertsj):

Now list all the factors of -120 until you find a pair whose sum is +19. I'll get you started:

OpenStudy (mertsj):

|dw:1363900418300:dw|

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