How do you solve five equals x2 plus six x?

Answer 1

You write it as x2 + 6x - 5 = 0, and then do one of the following:

1) Factor the polynomial. Note that the product of two number is zero if one of the factors is zero.

2) Complete the square.

3) The most general method to use - for polynomials that are difficult to factor - is the quadratic formula. In this case, the coefficients are a = 1, b = 6, c = -5.