Question

teacher told to students Amit and Ankita to write an example of quadratic polynomials on the blackboard Amit wrote x2+2 and Ankita wrote x bracket x2-4 who wrote the correct answer​

Answer 1

Answer:

Amit is right because x^2+2 has a degree of 2 but x(x^2-4)=x^3-4x has a degree of 3 which is a cubic polynomial

Answer 2

Amit wrote the correct quadratic polynomial.

Step-by-step explanation:

Amit wrote,

An example of quadratic polynomial on the blackboard =$x^{2}+2$

Ankita wrote,

An example of quadratic polynomial on the blackboard $=x(x^2-4)$

To find, who wrote the correct quadratic polynomial = ?

Amit wrote,

An example of quadratic polynomial on the blackboard $=x^{2}+2$

Here, a = 1, b = 0 and c = 2 ($a\neq 0$)

This is the correct quadratic polynomial.

Ankita wrote,

An example of quadratic polynomial on the blackboard

$=x(x^2-4)$

$=x^3-4x$

This is the cubic polynomial( not quadratic polynomial).

Hence, Amit wrote the correct quadratic polynomial.