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math help!!simplify

0 votes

simplify.

a. √ 20 + √ 5

b. 5√(12)-2√27

c. √ 3 (√(6)+2√5)

d. 24√18 0ver 8√2

asked Nov 21, 2014 in PRECALCULUS by anonymous

4 Answers

0 votes

a)

image

This can be written as 

image

Hence the value of  image is  image

answered Nov 21, 2014 by saurav Pupil
0 votes

b)

image

This can be written as 

image

Hence the value of  image  is  image

answered Nov 21, 2014 by saurav Pupil
0 votes

c )

image

This can be written as 

image

Hence the  value of   image  is    image

answered Nov 21, 2014 by saurav Pupil
0 votes

d)

image

This can be written as 

image

 24  is written as (8 * 3)

image

Cancelling  common terms in numerator and denominator .

= 3 * 3 = 9 .

Hence the value of  image is  9.

answered Nov 21, 2014 by saurav Pupil
edited Nov 21, 2014 by yamin_math

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