Question

(4) State giving reason whether the following
1
expression is a polynomial or not: y2 + 18 - 5y
1​

Answer 1

Answer:

The given algebraic expression is a polynomial in one variable because all the powers of x are whole numbers. ... (2) y1/2 -5y + 18 is not a polynomial because in this given equation the first term contains the power of y as 1/2 where 1/2 is not a whole number.

Answer 2

Correct question :

State giving reason whether the following expression is a polynomial or not : y² + 18 - 5y

Answer:

y² + 18 - 5y is a polynomial as the exponents of the variable 'y' has non - negative integral exponents.

Step-by-step explanation:

As, the definition of polynomial says - An algebraic expression involving only non-negative integral powers/exponents of a variable is called a polynomial in the variable.

Examples :-

4x² + 5x - 2 is a polynomial.

x^-3+x^⅓ is not a polynomial.