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Formula
Calculate the value
Answer
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$\dfrac{ \sqrt{ 7 } + \sqrt{ 5 } }{ 2 } + \dfrac{ \sqrt{ 7 } - \sqrt{ 5 } }{ 2 }$
$\sqrt{ 7 }$
Calculate the value
$\color{#FF6800}{ \dfrac { \sqrt{ 7 } + \sqrt{ 5 } } { 2 } } \color{#FF6800}{ + } \color{#FF6800}{ \dfrac { \sqrt{ 7 } - \sqrt{ 5 } } { 2 } }$
$ $ Combine the fraction with the same denominator $ $
$\dfrac { \sqrt{ \color{#FF6800}{ 7 } } \color{#FF6800}{ + } \sqrt{ \color{#FF6800}{ 5 } } \color{#FF6800}{ + } \sqrt{ \color{#FF6800}{ 7 } } \color{#FF6800}{ - } \sqrt{ \color{#FF6800}{ 5 } } } { 2 }$
$\dfrac { \sqrt{ 7 } \color{#FF6800}{ + } \sqrt{ \color{#FF6800}{ 5 } } + \sqrt{ 7 } \color{#FF6800}{ - } \sqrt{ \color{#FF6800}{ 5 } } } { 2 }$
$ $ Remove the two numbers if the values are the same and the signs are different $ $
$\dfrac { \sqrt{ 7 } + \sqrt{ 7 } } { 2 }$
$\dfrac { \sqrt{ \color{#FF6800}{ 7 } } \color{#FF6800}{ + } \sqrt{ \color{#FF6800}{ 7 } } } { 2 }$
$ $ Calculate between similar terms $ $
$\dfrac { \color{#FF6800}{ 2 } \sqrt{ \color{#FF6800}{ 7 } } } { 2 }$
$\color{#FF6800}{ \dfrac { 2 \sqrt{ 7 } } { 2 } }$
$ $ Reduce the fraction $ $
$\sqrt{ \color{#FF6800}{ 7 } }$
Solution search results
search-thumbnail-The rationalizing factor of \sqrt{23} is 
$°$ $Options^{°}$ $0$ 
A 24 
23 
C \sqrt{23} 
D None of these
7th-9th grade
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