Question

Find out that given expression is a polynomial or not. If not give reasons:

(a) √2 x

-1

-

7

√x

+6

(b) 4x3 – 2x2 + x + 8

(c) √2y + √2y

3 –



√2

Answer 1

In (a) one of the x's power is in fraction.
Hence,
It is not a polynomial.

Whereas,
In (b) and (c) least power of x is also in whole number.
So,
They are polynomials.



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