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The refractive index is a dimensionless quantity that measures how much light bends when it passes from one medium to another. Since it is a ratio of speeds, it has no units.
If x2 – 5x + 1 = 0, then find the value of {x2 + (1/x2)}.
A certain number of students from school X appeared in an examination and 30% students failed. 150% more students than those from school X, appeared in ...
If 9x2 + 16y2 = 24xy, then find the ratio of ‘x’ and ‘y’, respectively.
If A = (7)1/3 + (7) -1/3, then the value of {3A3 – 9A} will be:
If 
= 4 then
If x + 1/x = 5 then find out the value of x⁵ + 1/(x⁵)?
If a + b + c = 8, a² + b² + c² = 18 and ab + b c+ ca = 12, then what is the value of a³ + b³ +c³ –3abc?
Find ‘x’ if (x³+3x)/(3x²+1) = 189/61
Find the value of
(1 - `1/(p+1)` ) + (1 - `2/(p+1)` ) + (1 - `3/(p+1)` ) + ........................... + (1 - `p/(p+1)` )
