# How do you factor and solve #x^2 + 4x - 7 = 0#?

##### 1 Answer

Jul 11, 2016

The are no factors, so you would have to use the quadratic formula or the method of completing the square.

#### Explanation:

This expression does not factorise as there are no integral factors of 7 which subtract to give 4.

The equation would have to be solved by the quadratic formula or by completing the square.