First you'd factorise 9-x^2 to get (3+x)(3-x) Then multiply the fractions to get: . (8-2x)(6-2x) . (3-x)(3+x)(4-x) Now since both brackets in the numerator have a common factor of 2, factorise them: . 2(4-x)(3-x) . (3-x)(3+x)(4-x) Now you can cancel stuff out: 2(4-x)(3-x) (3-x)(3+x)(4-x) Which is basically: . 2 . (3+x) I hope I mangaed to make that clear. It's quite hard to demonstrate using just text. Ignore the dots, that was just an attempt to make the line longer.
I was actually worried that I would get ninja'd multiple times. 51m0nn was right though, it does feel good when you finish a question like that.
I got all mixed up when there was no = sign. I like = signs, they give me comfort. Now, <,>,and other things like that are just messy, and no sign at all is just disturbing. 0.o
I just realised that I can show this to my parents as proof that I've done revision. It's a win-win situation for everyone!
Yeah you're supposed to factorise the top and bottom what I got was: 8-2x * 6-2x 9-x^2 4-x 8(2)-2x * 6-2x 9-x^2 4(1)-x 2-2 __ *2 (3-x) 9-x^2 ___1 0__ * 2(3-x) 9-x^2__1 0 9-x^2 = 0 That's how I worked it out, but I don't think that that is right
OOOOOH I GET IT NOW I forgot to factorise the 9-x^2! Thanks! I worked it out all wrong xD EDIT: oops, couldn't be avoided, I double posted D:
In this step, you seem to have canceled out the x somehow. That's probably the reason why you got that answer. If you want the solution, I posted it on the page before this one. I'm not actually certain about what I said so just ignore that. Anyway, glad I could help. Just remember when you see "x^2 - (square number)", immediately factorise it to get (x+square root)(x-square root). It's really awkward to explain by text but I hope that what I said was clear.
No, you can't do that, that thing with the 2x and the x and... If there's a + or - sign between two things, you can't simplify them between the numerator and denominator. What you did would work if it was being multiplied, but it was being subtracted. I don't think that helped much, but look at how B-dog did it. He's right. B-dog, you ninja! xD How will I ever look smarticus if you keep stealing my glory and fame?
Well its a fact my dad and my brother think I'm a creeper. now in your opinion whens the cut off age for people to stop liking My little pony? they say its my age 21. but in fact I watch it so i have something to talk about in my Early childhood Education class what you all think?
-looks knowingly at other bronies in the room- Common problem. My brother thinks I'm a creeper too, in his opinion MLP shouldn't even exist. I think you should be able to like whatever you want to without being judged, but I'm an idealist I suppose.
