July 30, 2014

Homework Help: math

Posted by Rory on Thursday, November 16, 2006 at 7:35pm.

Factor 2x+13x+40

I thought with this sort of problem you are supposed to multipy 40 by 2 and get 80 and then come up with two factors that equal 13. If this doesn't work, you are supposed to factor out a number/variable.

Since neither of these methods work, is this problem unable to be factored, or am I mistaken?

Thanks in advance.

i thought it would be 15x3+40. I am not sure though

I don't think it can be factored. The factors of 40 are
and none of those number will work.


a x^2 + bx + c

calculate the discriminant:

b^2 - 4 a c.

If it is negative it cannot be factored.

In this case it is -151. The factorization involves the square root of the discriminant. If it isn't rational you won't be able to find the factorization by inspection easily either.

Answer this Question

First Name:
School Subject:

Related Questions

algebra2 - Solve each of the following quadratic equations. can some explain how...
math/algebra - subtract. express in simplest form 13x/30 - 4x/ 15 = factor the ...
pre calc - A polynomial f(x) with real coefficients and leading coefficient 1 ...
help...solving a polynomial....algebra - solve this me....12x(...
algebra - 3ax^2 - 27a You can factor that into 3a (x^2 - 9), which also equals ...
Algebra - Can you pleas Solve the quadric equation step by step 4x square =13x+...
help - i need help solvin this quadratic equation 2x^2+x-6=0 1/3x^2+8x-3=0 Try ...
algebra - this is what u do on your first problem....first u take out the ...
Chemistry (Check) - classify each of these statements as always true, sometimes ...
Algebra - (x+4)^2=18. (x+4)(x+4)-18= x^2+8x-2=0. (x )(x )I have no idea how to ...