4. Find the roots of the polynomial equation H(x) = x - 7x - x + 7. Part 1: If -1 is one of the roots of H(x) Part II: Factor the quadratic expression - x - 7x - x+ 7, use synthetic division from Part I to find the final 2 factors and to find the resulting quadratic roots. expression, Hint: If -1 is a root. (x + 1) is the factor