If x=9-4underoot5, find the value of x^2+1/x^2

How do i get 1000 using 5 9s?

e^x (1-sinx)/1-cosx) dx

What is diagonals ?

solve the following using matrices.... 3x-y=6 , x-3z=7 ,2y+3z=0

we are service provider.

our turnover upto 2.5 Cr.

how much SAC code is mandatory for us.

we are maintenance office of building and provide building repair and maintenance service.

also provide SAC code for this service.

Karun sah

1. Who is the first person came in World? 
   

X/logx integration

In triangle ABC,angle ABC=90°AD=DC,AB=12 cm and BC=6.5 cm.find the area of triangle ABD