Use the factor theorem and polynomial division to factorise: y = x 4 + 6x 3 11x 2 + 4x + 4 Sketch a graph of this polynomial function, labelling the...

Use the factor theorem and polynomial division to factorise: y = −x 4 + 6x 3 − 11x 2 + 4x + 4 Sketch a graph of this polynomial function, labelling the intercepts. You will need a calculator to approximately locate two of the intercepts