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Rationalise the denominator of the following 1) 4/(?7+?3)2) 3-2?2/3+2?2?

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$1)frac4sqrt7+sqrt3$

$Rightarrow frac4sqrt7+sqrt3*fracsqrt7-sqrt3sqrt7-sqrt3$

$Rightarrow frac4*(sqrt7-sqrt3)7-3$

$Rightarrow sqrt7-sqrt3$

$2)frac3-2*sqrt23+2*sqrt2$

$Rightarrow frac3-2*sqrt23+2*sqrt2*frac3-2*sqrt23-2*sqrt2$

$Rightarrow frac9+8-12*sqrt29-8$

$Rightarrow 17-12*sqrt2$

Posted by

Deependra Verma

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