Is this mapping a funotion or not a function?

What is the standard form of -5x^2+2x^4-11+x^3+3x

Write the expression in complete factored form. 5n_(c - 3) - n(c - 3) =

Mr. rose asked his students to draw a quadrilateral with 4 unequal sides. draw an example of this kind of quadrilateral.