How can using real numbers to solve word problems

The factorization of 8x3 -125 is (2x-5)(jx2 +kx+25)

What is the value of m in the equation 1/2 m - 3/4n=16 when n=8

This is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 4 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 3 terms. this is a rational expression because the denominator contains a variable. this is a polynomial with 5 terms.