MathCad help

Hi folks wondering if you can help me? I am using mathcad to solve polynomialequation. I have attempted the question and wanted to see if the question is correct and I am doing what is asked of me. I have to solve it in two different ways other than graphical. I have tried to solve it this way first. Basically h(x)=6 to four decimal places. The answer is in the uploaded file. Would be grateful for some insight.


b) Using MathCad solve the polynomial h(x) = 6 using at least two different methods other than graphical, giving your answers to 4 decimal places........ h(x)=x⁴-x³-19x^​2-11x+30