2√3 + √3 is equal to
a. 2√6
b. 6
c. 3√3
d. 4√6

Solution:

Given

2√3 + √3

Let us take out √3 as common

= √3(2 + 1)

By further calculation

= 3√3

Therefore, 2√3 + √3 is equal to 3√3.

✦ Try This: 5√3 + 8√3 is equal to a. 5√6, b. 5, c. 13√3, d. 4√6

Given

5√3 + 8√3

Let us take out √3 as common

= √3(5 + 8)

By further calculation

= 13√3

Therefore, 5√3 + 8√3 is equal to 13√3.

☛ Also Check: NCERT Solutions for Class 9 Maths Chapter 1

NCERT Exemplar Class 9 Maths Exercise 1.1 Problem 10

2√3 + √3 is equal to a. 2√6, b. 6, c. 3√3, d. 4√6

Summary:

Irrational numbers consist of non-terminating and non-recurring decimals. 2√3 + √3 is the addition of two irrational numbers. 2√3 + √3 is equal to 3√3

☛ Related Questions:

• √10 x √15 is equal to a. 6√5, b. 5√6, c. √25, d.10√5
• The number obtained on rationalising the denominator of 1/(√7 - 2) is a. (√7 + 2)/3, b. (√7 - 2)/3, . . . .
• 1/ (√9 - √8) is equal to a. 1/2 (3 - 2√2), b. 1/(3 + 2√2), c. 3 - 2√2, d. 3 + 2√2