Question

Which of the following is expression with one variable
a) y+1
b)x+y-5
c)x+y+z
d) 1​

Answer 1

Answer:

a) y + 1

Step-by-step explanation:

As it has only 1 polynomial whereas

b) has 2 polynomials

c) has 3 polynomials

d) has none it is a constant polynomial

Answer 2

Answer: (a)

Explanation :

What is a variable ?

- A variable is a location to store different values. It's value is not fixed. Usually, it is denoted by alphabetical letters.

(a) This has one variable y

(b)This expression has two variables i.e x and y

(c)This expression has 3 variables i.e x, y and z.

(d) It has no variable. It is a constant polynomial.

Conclusion : Options (b), (c), and (d) are validated. Hence, option (a) is the answer.

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