01:19
Factor: ax - x - 5a 5
Practice with factoring involving minus signs: ax - x - 5a 5.
01:34
Solving Quadratic Equations When Both Sides are Perfect Squares
Solving an equation in which both sides are perfect squares does not require putting the equation into standard form.
02:05
Factor: a2 - ac - ab bc
When grouping terms, the goal is to end up with an expression that is equal to the original polynomial. Close attention to the signs is necessary to ensure a correct outcome. Remember that a minus sign in front of parentheses is the same as subtract...
01:02
Square Root of a Negative Number is Not a Real Number, The
The square root of any negative number is not a real number. Writing a negative number in radical form is illustrated.