# How do you factor and solve #-x^2-2x+3 = 0#?

##### 3 Answers

Set

Set

Taken you through the process step by step

#### Explanation:

Given:

First of all I am going to make a deliberate mistake.

Notice that

So in error write:

Lets consider just the

Because we have a negative

the required

We now need

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

So the factorisation is

Set

Set

x = 1, and x = -3

#### Explanation:

Since a + b + c = 0, use shortcut.

The 2 real roots are:

x = 1 , and

**Rule of Shortcut.**

If a + b + c = 0, The 2 real roots are: x = 1, and

If a - b + c = 0, The 2 real roots are: x = -1, and

Remember this shortcut. It will save you a lot of time and effort.