Q. 1 I3.9( 12 Votes )

# Which one is the conjugate pair of 2√5 + √3?

A. -2√5 + √3

B. -2√5 - √3

C. 2√3 + √5

D. √3 + 2√5

Answer :

A math conjugate is formed by changing the sign between two terms in a binomial. For instance, the conjugate of x + y is x - y.

Now,

2√5 + √3 = √3 + 2√5

Its conjugate pair = √3 - 2√5 = -2√5 + √3

∴ The conjugate pair of 2√5 + √3 = -2√5 + √3

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Which of the following is an irrational number?

MHB - Math Part-IChoose the correct alternative answer for the questions given below.

i. Which one of the following is an irrational number?

MHB - Math Part-IShow that 5 + √7 is an irrational number.

MHB - Math Part-IWrite the following numbers in its decimal form.

i. -5/7 ii. 9/11

iii. √5 iv. 121/13

v. 29/8

MHB - Math Part-IRationalize the denominator.

i. ii.

iii. iv.

v.

MHB - Math Part-ISimplify.

i.

ii.

iii.

iv.

v.

MHB - Math Part-IWhat is √n, if n is not a perfect square number?

MHB - Math Part-IRationalize the denominator.

i. ii.

iii. iv.

v.

MHB - Math Part-IMultiply

i. √3(√7 – √3)

ii. (√5 – √7)√2

iii. (3√2 – √3)(4√3 – √2)

MHB - Math Part-I