" 2.Gàal भil Cidla fisfict 'And) : "x^(20)

Factorise : x^(2)-19x-20

x^(2)+x-20=0

Show that dydxdydx=yx in the following, where a and p are constants : log(x20-y20x20+y20) = 20

The coefficient of x^(203) in the expansion of (x-1)(x^(2)-2)(x^(3)-3)dots(x^(20)-20) is

The volume of a given mass of gas at 273K is x ? The volume of it at 20^(0)C is V_(20) .Then its volume at 25^(0)C is (1) 25x (2) V_(20) +(25x)/(273) (3) V_(20) +(5x)/(273) (4) V_(20) X5x

The coefficient of x^(20) in (1 + 3x + 3x^(2) + x^(3))^(20) ,I s

If x is the root of the equation x^(2) -ix -1 =0 , then The value of x^(20) + 1/x^(20) may be

If x is the root of the equation x^(2) -ix -1 =0 , then The value of x^(20) + 1/x^(20) may be

The coefficient of x^(20) in (1 + 3x + 3x^(2) + x^(3))^(20) ,I s