Which of the following are quadratic equations?
(i) $x^2\ +\ 6x\ - 4\ =\ 0$

Given:

Given quadratic equation is $x^2\ +\ 6x\ - 4\ =\ 0$.

To do:

We have to check which of the given equations are quadratic.

Solution:

The standard form of a quadratic equation is $ax^2+bx+c=0$.

$x^2\ +\ 6x\ - 4\ =\ 0$

The given equation is of the form $ax^2+bx+c=0$ where $a=1, b=6$ and $c=-4$.

Therefore, $x^2\ +\ 6x\ - 4\ =\ 0$ is a quadratic equation.

Tutorialspoint

Simply Easy Learning

Updated on: 10-Oct-2022

47 Views

Kickstart Your Career

Get certified by completing the course

Get Started