(3+sqrt(23))-sqrt(23)

Classify the following number as rational or irrational: (3+sqrt23)-sqrt23

Classify the following numbers as rational or irrational : (3+sqrt23)-sqrt23 .

Find the value of (1)/(1+sqrt(3))+(1)/(sqrt(3)+sqrt(5))+...+(1)/(sqrt(23)+sqrt(25))

Without expanding, show that the value of each of the following determinants is zero: |(sqrt(23)+sqrt(3),sqrt(5),sqrt(5)),(sqrt(15)+sqrt(46),5,sqrt(10)),(3+sqrt(115),sqrt(15),5)| .

The value of 5sqrt(3) + 7sqrt(2) - sqrt(6) - 23/(sqrt(2) + sqrt(3) + sqrt(6)) is:

What is the value of sqrt(23+2sqrt(130)) ?

Let f:X rarr yf(x)=s in x+cos x+2sqrt(2) be invertible.Then which X rarr Y is not possible? [(pi)/(4),(5 pi)/(4)]rarr[sqrt(2,3)sqrt(2)][-(3 pi)/(4),(pi)/(4)]rarr[sqrt(2,3)sqrt(2)][-(3 pi)/(4),(3 pi)/(4)]rarr[sqrt(2,3)sqrt(2)] none of these