Atriangle has one side that measures 12, another side that measures x, and a third side that measures 4 less than x. the perimeter is 26. which equation would we use to find the value of x? x + x + 4 + 12 = 26 x + x - 4 + 12 = 26 x + x - 4 = 26 x + x + 4 = 26

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.