Question

Classify the following as linear, quadriatic and cubic polynomials:
(i) $x^2+x$
(ii) $x-x^3$
(iii) $y+y^2+4$

Answer 1

(i) $x^2+x$ is quadratic as $x^2$ has highest power.

(ii) $x-x^3$ is cubic as $-x^3$ has highest power.

(iii) $y+y^2+4$ is quadratic as $y^2$ has highest power.