Question

identify polynomials and mention their degrees:
i) 6x^3+5x^3+3
ii) x^7 + 4x^3+10
iii) x^2 +3x+2
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Answer 1

Answer:

estion 1:

State whether the given algebraic expressions are polynomials? Justify.

(i) y +

1

y

(ii) 2 - 5

√

x

(iii) x2 + 7x + 9 (iv) 2m-2 + 7m - 5 (v) 10

ANSWER:

In an algebraic expression, if the powers of the variables are whole numbers then the algebraic expression is a polynomial.

(i)

y+

1

y

=y+y-1

Here, one of the powers of y is −1, which is not a whole number. So, y +

1

y

is not a polynomial.

(ii)

2 - 5

√

x

=2-5x

1

2

Here, the power of x is

1

2

, which is not a whole number. So, 2 - 5

√

x

is not a polynomial.

Step-by-step explanation:

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