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# Classify the following as linear, quadratic and cubic polynomials : i)$$x^2 + x$$ii)$$x - x^3$$iii)$$y + y^2 + 4$$iv)$$1 + x$$v)$$3t$$vi)$$r^2$$vii)$$7x^3$$

i) The degree of polynomial $$x^2 + x$$ is 2. Hence, it is a quadratic polynomial.

ii) The degree of polynomial $$x - x^3$$ is 3. Hence, it is a cubic polynomial.

iii) The degree of polynomial $$y + y^2 + 4$$ is 2. Hence, it is a quadratic polynomial.

iv) The degree of polynomial $$1 + x$$ is 1. Hence, it is a linear polynomial.

v) The degree of polynomial $$3t$$ is 1. Hence, it is a linear polynomial.

vi) The degree of polynomial $$r^2$$ is 2. Hence, it is a quadratic polynomial.

vii) The degree of polynomial $$7x^3$$ is 3. Hence, it is a cubic polynomial.