Frequent Questions about our Solver

The problem

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Why cant the system expand on this question?

Answer provided by our tutors

The web solver is not designed to solve equations from forth degree. 


The best suggesting is to factor the expression:

(x^2+x)^2-8(x^2+x)+12

This way you get:

(x^2+x)^2-8(x^2+x)+12 = (x - 2)(x - 1)(x + 2)(x + 3)

Click here to see the step by step factorization. 

Thus, solving (x^2+x)^2-8(x^2+x)+12 = 0 means solving (x - 2)(x - 1)(x + 2)(x + 3) = 0

This means that (x^2+x)^2-8(x^2+x)+12 = 0 if any of its factors equals zero:

x - 2 = 0, that is, x1 = 2

x - 1 = 0, that is, x2 = 1

x + 2 = 0, that is, x3 = -2

x + 3 = 0, that is, x4 = -3

And, these are the exact same solutions that the solver returns:

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