An example of a polynomial with two variables is 4x2y – 2xy2 + x – 7. ... By applying the same principles for polynomials with one variable, you can ... Evaluate 7x2 – 3x + 2 for x = −2. ... Evaluate the exponents first. 49 + (−24). Multiply. 25. Add. Answer. 25 .... In this case, 7x2y – 3xy3 + 2x is a fourth degree polynomial. For example, 3x2 as 3x^2. x^2(2+3x). \[x^{2x+3x^2}\]or