Advertisements
Advertisements
प्रश्न
Classify the following number as rational or irrational:
`(3+sqrt23)-sqrt23`
Advertisements
उत्तर
`(3+sqrt23)-sqrt23
= 3 + sqrt23 - sqrt23`
= 3
which is a rational number.
APPEARS IN
संबंधित प्रश्न
Rationalise the denominator of each of the following
`3/sqrt5`
Rationalise the denominator of the following
`(sqrt2 + sqrt5)/3`
Find the value to three places of decimals of the following. It is given that
`sqrt2 = 1.414`, `sqrt3 = 1.732`, `sqrt5 = 2.236` and `sqrt10 = 3.162`
`2/sqrt3`
Express the following with rational denominator:
`1/(3 + sqrt2)`
Express the following with rational denominator:
`1/(2sqrt5 - sqrt3)`
Simplify:
`2/(sqrt5 + sqrt3) + 1/(sqrt3 + sqrt2) - 3/(sqrt5 + sqrt2)`
if `x = (sqrt3 + 1)/2` find the value of `4x^2 +2x^2 - 8x + 7`
Simplify \[\sqrt{3 - 2\sqrt{2}}\].
Rationalise the denominator of the following:
`1/(sqrt7-sqrt6)`
Rationalise the denominator in the following and hence evaluate by taking `sqrt(2) = 1.414, sqrt(3) = 1.732` and `sqrt(5) = 2.236`, upto three places of decimal.
`(sqrt(10) - sqrt(5))/2`
