



 
Kayla, If you asked me to calculate 15 × 12/18 I would first look to see if there are common factors in the numerator and denominator so that I can simplify the expression. For example 12 = 2 × 6 and 18 = 3 × 6 so
But 15 = 3 × 5 so
Try this technique with your algebraic expression
Factor the expressions (x^{2}  9), (x^{3}  4x) and (x^{2}+5x+6) and see if you can simplify
Write back if you need more help,  


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 