Question

If $a{x}^n+b{x}^{n-1}+c=0$ is a quadratic equation, then which of the given options is not correct?

• A. a, b and c are real numbers
• B. n = 2
• C. Coefficient 'a' must always be 1
• D. a$\ne$0

Answer 1

The correct option is C Coefficient 'a' must always be 1

The standard form of a quadratic equation in variable x is $a{x}^2+bx+c=0$, where a, b, c are real numbers and a $\ne$ 0.
Since 'a' can take any real value except 0, the option "Coefficient 'a' must always be 1" is not correct.