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Algebra- Factoring
14/f and failing math.
How do you completely factor problems such as :
x^4+2x^3+x+2
4x^2+1
16x^2-49
24x^2-30
the caret (^) means to the power of 2 or 3 or 4, whatever single digit number comes after it.
I didn't pass this last test, and no matter how many times it's explained to me i don't understand. What would the answers be? Does anyone know any helpful websites that may be of assistance? Thank you.
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I'm 13, and we started that early this year. Honestly people telling you answers isn't going to make you any better at math. Is there anybody in your family you could go to? A mom, dad, older sibling? If not, and you think you're really doing poorly, you might want to see if your teacher has any extra-help options, or if your school has any tutors.
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I'm a second year technology student in university, so I've taken tons of math... if you ever need help with math, let me know!
However, I'm a little rusty on factoring. You don't use the tricky stuff all too much in the future (YAY!), but here's one I could provide a detailed answer for.
Third one...
16x^2 - 49
If you look carefully, you can see that this is a difference of squares situation. Both of the terms have square roots.
This means that we can do this;
(4x + ) (4x - )
When the two terms are multiplied, you'll have 16x^2 minus something (which is what we want).
Now, we just have to figure out what the root of the last term is. sqrt(49) is 7, right? So we just plug that into the blanks.
(4x + 7) (4x - 7)
If you multiply it back out, you'll see that it works.
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[Link](Mouse over link to see full location)
Try that site. :]
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Alright, you're fourteen and you're doing this? Crazy. I'm seventeen, and we just learned this in my math class this year.
For the first one:
(x+1)(x+2) (or if you're looking for zeros, x=-1 & x=-2)
I have no idea about the second one.
Take the square root! for the third one.
So the answer would be: (x+4)(x-7) (zeros: x=-4 x=7)
I have no idea about the fourth one either.
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