exam Maths Puzzle Numerical Ability

i need to know how to graph:

h(x)=x^4+6x^3+8x^2-x


and how to factor:
h(x)=x^4+2x^3-23x^2+2x-24



thank you!!!!!!!

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exam Other Question
The hypotenuse of a right triangle is 2.8 units long. The longer leg is 1.6 units longer than the shorter leg. Find the lengths of the sides of the triangle. Factor completely 12x^3-3xy^2