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Mathematics 9 Online
OpenStudy (baby_bear69):

http://prntscr.com/aggnfg Help please! im stuck! @ganeshie8 @iambatman @compassionate

OpenStudy (baby_bear69):

@inkyvoyd @mathmath333

OpenStudy (baby_bear69):

@jhonyy9

OpenStudy (baby_bear69):

@Jaynator495

OpenStudy (baby_bear69):

@Qwertty123

OpenStudy (fortytherapper):

I just realized this only has one more solution

OpenStudy (baby_bear69):

Does one of them involve 13, something? lol

OpenStudy (fortytherapper):

What kind of function is \[b^2\] If you want to change it to x, then \[x^2\] What kind of function is that

OpenStudy (fortytherapper):

And yeah, sort of

OpenStudy (baby_bear69):

What kind of function?? idk.. o.o

OpenStudy (fortytherapper):

Like, is it linear, parabola, cubic, etc

OpenStudy (baby_bear69):

cubic i think

OpenStudy (fortytherapper):

Good guess, it's a parabola (The U shaped curve), so at most, it can have 2 solutions (like this one that we are given)

OpenStudy (fortytherapper):

Now would you agree that \[x^2-10x=39\] is the same as \[x^2-10x=39+0\]

OpenStudy (baby_bear69):

Ohh okay, so should i just try to graph it?? or

OpenStudy (fortytherapper):

We don't have to graph it

OpenStudy (baby_bear69):

oh! okay

OpenStudy (baby_bear69):

Yes thats the same

OpenStudy (fortytherapper):

Alright, so now we solve for 0. We can subtract 39 from both sides \[x^2-10x-39 = 0\] Now to find that other solution, we must factor. We already have 1 solution of +13, so that's nice \[(x + 13)(x (+/-)?)\] So what number multiplied by 13 can get us that -39 (that's in our new equation)?

OpenStudy (baby_bear69):

-3

OpenStudy (fortytherapper):

And there's the solution set completion

OpenStudy (baby_bear69):

Thank you!!

OpenStudy (fortytherapper):

Anytime!

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