Tia_Sweetheart17
this is a quadratic equation. i know the formula i just need to know how to do it. x^2+2x-24=0
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gandalfwiz
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Do you know how to find your A, your B, any your C?
gandalfwiz
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Wait- just re read the question. You're looking to use the quadratic formula, right?
gandalfwiz
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Okay, good. So your a is 1, your b is 2, and your c is -24
so wherever you see an a in the formula, you put a 1, 2 for the b, and -24 for the c
gandalfwiz
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So, the formula starts with (-b)^2. For that b, you'd put in 2. Do the same with the rest of the a's,b's, and c's and then just solve for x
gandalfwiz
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Is that good or do you want to do the process together?
Tia_Sweetheart17
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could we do it together to make sure i'm doing it right?
gandalfwiz
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sure!
gandalfwiz
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Alright, to heck with the stupid equation. I'm drawing it
gandalfwiz
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|dw:1331687946988:dw|
gandalfwiz
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Okay, so lets do the a's first
gandalfwiz
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Since your a is 1, that's really simple because it only ever needs to get multiplied by the 2, and 2*1=1. So for a, you don't need to make any changes
gandalfwiz
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Lets to b next. |dw:1331688080301:dw|
gandalfwiz
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Sorry about that extra a; I forgot to mention it when we did a but it's the same situation. Because a is 1 and it's being multiplied, it makes no difference
gandalfwiz
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Any questions so far?
gandalfwiz
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Okay :) Now lets do c.|dw:1331688316770:dw|
gandalfwiz
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And all of that is equal to x
Now we need to solve for x
gandalfwiz
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|dw:1331688455475:dw|
gandalfwiz
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|dw:1331688519484:dw|
gandalfwiz
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|dw:1331688549330:dw|
gandalfwiz
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|dw:1331688578241:dw|
gandalfwiz
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|dw:1331688607188:dw|
gandalfwiz
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And that's all there is :)
Tia_Sweetheart17
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thank you so much. i think i got it.
gandalfwiz
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You're welcome :) medal?
gandalfwiz
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:)
Tia_Sweetheart17
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could you help me again?