Advertisements
Advertisements
प्रश्न
Write the lowest rationalising factor of : 7 - √7
योग
Advertisements
उत्तर
7 - √7
( 7 - √7 )( 7 + √7 ) = 49 - 7 = 42
Therefore, lowest rationalizing factor is ( 7 + √7 ).
shaalaa.com
Rationalisation of Surds
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Write the lowest rationalising factor of : √13 + 3
Find the values of 'a' and 'b' in each of the following :
`[2 + sqrt3]/[ 2 - sqrt3 ] = a + bsqrt3`
If x =`[sqrt5 - 2 ]/[ sqrt5 + 2]` and y = `[ sqrt5 + 2]/[ sqrt5 - 2 ]`; find :
x2
If x = `2sqrt3 + 2sqrt2`, find: `1/x`
If x = 2√3 + 2√2, find: `(x + 1/x)`
If x = 1 - √2, find the value of `( x - 1/x )^3`
Show that :
`1/[ 3 - 2√2] - 1/[ 2√2 - √7 ] + 1/[ √7 - √6 ] - 1/[ √6 - √5 ] + 1/[√5 - 2] = 5`
If √2 = 1.4 and √3 = 1.7, find the value of : `1/(3 + 2√2)`
Rationalise the denominator `(3sqrt(5))/sqrt(6)`
If x = `sqrt(5) + 2`, then find the value of `x^2 + 1/x^2`
