+0  
 
0
818
4
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2/5sqrt(5)-3

is this equal to 10sqrt(5)-6/134

 Oct 30, 2015

Best Answer 

 #2
avatar+23254 
+10

2 / [ 5 sqrt(5) - 3 ]

Multiply the numerator and the denominator by the conjugate of the denominator:

the conjugate of [ 5 sqrt(5) - 3 ] is [ 5 sqrt(5) + 3 ].

The numerator of the answer:  2 x [ 5 sqrt(5) + 3 ]  is  10 sqrt(5) + 6.

The denominator of the answer:  [ 5 sqrt(5) - 3 ] x [ 5 sqrt(5) + 3 ]  = 125 - 9  =  116.

 Oct 30, 2015
 #1
avatar
+5

nah bruh

 Oct 30, 2015
 #2
avatar+23254 
+10
Best Answer

2 / [ 5 sqrt(5) - 3 ]

Multiply the numerator and the denominator by the conjugate of the denominator:

the conjugate of [ 5 sqrt(5) - 3 ] is [ 5 sqrt(5) + 3 ].

The numerator of the answer:  2 x [ 5 sqrt(5) + 3 ]  is  10 sqrt(5) + 6.

The denominator of the answer:  [ 5 sqrt(5) - 3 ] x [ 5 sqrt(5) + 3 ]  = 125 - 9  =  116.

geno3141 Oct 30, 2015
 #3
avatar
0

Pretty easy to plug it into the calculator and see if they are equal.....

 

The first term  =  -2.10557

The second term = 22.3159       So , OBVIOUSLY, they are NOT equal

 Oct 30, 2015
 #4
avatar
0

Pretty easy to plug it into the calculator and see if they are equal.....

 

The first term  =  -2.821114

The second term = 22.3159       So , OBVIOUSLY, they are NOT equal

 

Sorry..... I misread the first term in my original post.

 Oct 30, 2015

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