Chapter 4 · Question 1

Define a quadratic equation and identify $a$ , $b$ , and $c$ in $2x^2+x-300=0$ .

Answer Revealed

Direct Answer:

A quadratic equation in

x

ax^2+bx+c=0

, where

a,b,c

are real numbers and

a\ne0

. In

2x^2+x-300=0

a=2

b=1

c=-300

A quadratic equation has highest power

2

. Here the coefficient of

x^2

2

, of

x

1

, and constant is

-300

The standard form is

ax^2+bx+c=0

, with

a\ne0

. Comparing

2x^2+x-300=0

with standard form gives

a=2

b=1

, and

c=-300

. This equation came from the area model of a rectangular hall in the NCERT introduction.

A quadratic equation in $x$ is $ax^2+bx+c=0$ , where $a,b,c$ are real numbers and $a\ne0$ .
Use the NCERT formula or theorem carefully.
Write units and final conclusion where applicable.

Related Questions