Question

Question 5
Classify the following as linear, quadriatic and cubic polynomials:
(i) $x^2+x$
(ii) $x-x^3$
(iii) $y+y^2+4$
(iv) 1 + x
(v) 3t
(vi) $r^2$
(viii)$7x^3$

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.

(iv) $1+x$ is linear.

(v) 3t is linear.

(vi) $r^2$ is quadratic as $r^2$ has highest power.

(vii) $7x^3$ is cubic $7x^3$ has the highest power.