Just as the name suggests, a difference of squares is an expression of the form: a 2 − b 2.A difference of squares can be factored like this: a 2 − b 2 = (a + b) (a − b). |
You should now simplify by dropping the unnecessary brackets and get
Algebra Coach Exercises |
Similar to a difference of squares, a sum of squares is an expression of the form: a 2 + b 2.A sum of squares cannot be factored over the real numbers but over the complex numbers it can be factored like this: a 2 + b 2 = (a + b i ) (a − b i ),where ![]() |
Each factor can actually be factored further than is shown here. Click here to see how.
You should now simplify by dropping the unnecessary brackets and get
Algebra Coach Exercises |