# Ex.2.1 Q4 Polynomials Solution - NCERT Maths Class 9

## Question

Write the degree of each of the following polynomials:

(i) \begin{align}5 x^{3}+4 x^{2}+7 x \end{align}

(ii) \begin{align}4-y^{2}\end{align}

(iii) \begin{align}5 t-\sqrt{7} \end{align}

(iv) \begin{align}3\end{align}

Video Solution
Polynomials
Ex 2.1 | Question 4

## Text Solution

Reasoning:

The highest power of the variable in a polynomial is called as the degree of the polynomial.

Steps:

(i) Degree of \begin{align}5 x^{3}+4 x^{2}+7 x\;\rm{is}\;3\end{align} (the highest power of the variable $$x$$)

(ii) Degree of \begin{align}4-y^{2}\;\rm{is}\;2\end{align} (the highest power of the variable $$y$$)

(iii) Degree of \begin{align}5 t-\sqrt{7}\;\rm{is}\;1\end{align} (the highest power of the variable $$t$$)

(iv) Degree of $$3\;\rm{is}\;0$$ (degree of a constant polynomial is $$0$$. Here $$3 = 3{x^\circ}$$ )

Video Solution
Polynomials
Ex 2.1 | Question 4
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