Question

Which one of the following is a polynomial?

(a) 3√t + t√2 (b) + (2/y)

(c)4x²-3x+7 (d) √y +2​

Answer 1

Answer:

option d or may be b

Step-by-step explanation:

i am confused in b and d

Answer 2

Answer:

(i) In 4x

2

−3x+7. all the indies of x are whole numbers. So, it is a polynomial in one variable x.

(ii) In y

2

+

2

the index of y is a whole number. So, it is a polynomial in one variable y.

(iii) In 3

t

+t

2

=3t

2

1

+

2

t, here the exponent of first term is

2

1

, which is not whole number therefore is it not a polynomial.

(iv) In y+

y

2

=y+2y

−1

, here the exponent of first term is −1, which is not whole number, therefore, is it not a polynomial.

(v) In x

10

+y

3

+t

50

is not a polynomial in one variable as three variable x,y and t occur in it.