algebra help!?

Question

determine whether the given binomial is a factor of the polynomial following it. if it is a factor, then factor the polynomial completely.

x+5, x^3 + 7x^2 +2x -40

the factorization of x^3 +7x^2 + 2x - 40 is ?????

Answer 1

Where are you having a problem? You divide the polynomial by x+5, and see whether there's any remainder. If not, then you factor the remaining quadratic trinomial, which you should be able to do from the previous section.

Answer 2

You use a long division technique to figure out (x^3 + 7x^2 +2x -40)/(x+5).... If it divides out evenly, it is a factor. If it has any remainder, it isn't.

In this case, you'll find, the result of the division would be x^2 -12x + 62 - (350/(x+5)) There is a remainder. It is not a factor.

Answer 3

For increasing cubic binomials the final formula is as follows: (a + b) ^ 3 = a^3 + 3*a^2*b^a million + 3*a^a million*b^2 + b^3 on your case, a is x and b is -y^5 So (x - y^5)^3 = x^3 + 3*x^2*(-y^5)^a million + 3*x^a million*(-y^5)^2 + (-y^5)^3 Simplified: =x^3 - 3x^2*y^5 + 3x*y^10 - y^15 :D

Answer 4

ummm (x^2+2x-8)(x+5)

so (x+4)(x-2)(x+5)

Answer 5

I have no idea. if u have a book it probably has a website and it will give you extra examples

Answer 6

just put the 2x first and leave evrything else in the same order

Answer 7

ummmmmmmmmm well i don't really know i am only in pre algebra i don't even know all those words why don't u like ask ur teacher for help if u need it

Answer 8

ok so you add the 6 by the quatity of poultion and u come up with newspaper ads.

Answer 9

7x+ 7x^5 - 40

I LOVE algerbra!