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Factor completely -6x2 + 18x – 24.
look at 6, 18, and 24. what can divide all 3 numbers?
By 3 and 6
But the 6 is a negative, so would it be -3 and -6?
yes. lets use the bigger one. you what do you get if you factor out a 6?
answer is 6(x-4)
@asianswag thats not one of the answers :( and besides, I want to learn how to do this, not just get an answer
also is it -6x^2+18x-24?
Correct. Should I put the ^ symbol from now on?
yes that was my mistake
Alright, well this is getting confusing. I wanna focus on the help of one person so I'm gonna focus on nikato for now. Hope you guys understand
Thank you, and thanks for understanding
ok. now lets look at what's inside the paranthese, do you know how to factor that?
Yeah, give me a sec
I got -6x^2+18x-24
Sorry it took so long, had to find a pencil and paper
wait, i think you did the oppsite. i think you distributed instead of factoring. you have something that looks like -6(x-__)(x+__)
Ooooh, alright. Haha, sorry I get confused by the two. How would I factor then?
|dw:1433970053677:dw| to factor this, you want to find two numbers when multiply gives you AC, but when you add them, you get B
so in this case, you're looking for two numbers that multiply to give you 4, but when you add them, you'll get -3
OOOOOH -4 and 1?
That took me so long to get I feel so stupid right now XD
yea. and because there's A=1. you dont have to worry about coefficients. so the factored form of x^2-3x+4= (x-4)(x+1)
wait, is you problem right? are you sure it's not +24
Yup, I'm positive. -6x^2 +18 - 24
oops. but i dont think you have factor it to (x-4)(x+1) because if you FOIL and check it you have x^2-3x-4., but you want +4 so this doesnt work so the most you can factor up to is -6(x^2 -3x +4)
Oh, okay. I see how you got that. Yeah, thats one of the answer choices. Thank you for your help! Since you spent 30 minutes trying to help me out I'll give you a medal AND fan!
yea. sorry for wasting your time. should've done it ahead of time. but you learned how to check it.
Nah its alright, you didn't waste any time. I just wanted to know how to do this, but the lesson wasn't very clear in my opinion. Thanks for the help :D