Author Topic: I need help with math  (Read 660 times)

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Offline Suzume

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I need help with math
« on: February 08, 2013, 10:52:32 pm »
My homework is. Identifies which of the following are perfect quadratic trinomials

Example: y2 + 16y - 64=

Please help
« Last Edit: February 09, 2013, 01:57:43 am by NightF0x »

Offline NightF0x

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Re: I need help with math
« Reply #1 on: February 09, 2013, 02:09:13 am »
So the way you check if a function is a perfect square is by taking the discriminant of the function.
D=b2-4ac
y=ax2+bx+c
The equation above will give you the discriminant of a quadratic function. A quadratic function is a perfect quadratic trinomial, so long that the Discriminant equals 0. (D=0)

For the y2+16y-64=0

D=162-4*(1)*(-64)=256+256=512
∴D=512 and D≠0

∴The function is not a perfect quadratic trinomial.

« Last Edit: February 09, 2013, 01:01:33 pm by NightF0x »
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Offline ArtiLove

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Re: I need help with math
« Reply #2 on: February 09, 2013, 08:30:54 am »
Good Job Nightfox.  A wonderful tutor you are! :)
Remember that smile, the one you wore with such beauty and grace?  Where has it gone?  What has happened to put you in this miserable, lonely place?  Smile for me, even it may be the last time I see.  A picture I will take not for myself, no. A picture for the entire world to embrace the happiness you once shared with me.  Just smile...

Offline Suzume

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Re: I need help with math
« Reply #3 on: February 09, 2013, 02:37:59 pm »
Thank you NightF0x you help me a lot :D

Offline NightF0x

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Re: I need help with math
« Reply #4 on: February 09, 2013, 02:56:51 pm »
No problem! C:
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