Write the coefficient of $x^{2}$ in the following question :
$15 - 3 x + 2 x^{2}$

Open in App

Solution

Given polynomial is $15 - 3 x + 2 x^{2}$

This expression can be written as

$= 2 x^{2} - 3 x + 15$
$= (2 \times x^{2}) - (3 \times x) + (15)$

So, the coefficient of $x^{2}$ is $2$ .

Suggest Corrections

Similar questions

Question 54 (ii)

Write the coefficient of $x^{2}$ in the following:

$x^{3} - 2 x^{2} + 3 x + 1$

x^{2}

x^{3} - 2 x^{2} + 3 x + 1

x^{2}

15 - 3 x + 2 x^{2}

1 - x^{2}

π x^{2} - 3 x + 5

x^{2}

\frac{π}{6} x + x^{2} - 1

3 x - 5

(x - 1) (3 x - 4)

(2 x - 5) (2 x^{2} - 3 x + 1)

\frac{2 x^{2} + 13 x + 15}{x^{2} + 3 x - 10} \div \frac{2 x^{2} - x - 6}{x^{2} - 4 x + 4}

Join BYJU'S Learning Program