in the first step from where this n-1/2 comes

Class 8 problems

Class 8 problems

 i want to create a ledger insurance charge  under whic group

differential equation of c(y+c)^2=x^3

Hey What theorem are u using BPT OR CONVERSE OF BPT 

Find the nth term series of 1/5,1/7,1/9,1/11...please solve this 

Science

Can you explain me question 4 of exercise 6.2 of Class 11 where you have said that 8 is greater or equal to 0.

ABCD is parallelogram and P is a point on BC 

Prove: ar(tringle ABP)+ar(tringle DPC)=ar(tringle APD)

How to solve this ?