Q. Factor out the greatest common factor. If the greatest common factor is 1, just retype the polynomial. 2r2−4
Divide by GCF: Now we will divide each term of the polynomial by the GCF to factor it out.2r2÷2=r2−4÷2=−2So, the polynomial can be written as the GCF times the factored terms.2r2−4=2(r2−2)