what is (a+b+c)whole square

sir how to solve quadratic inequalities by wavy curve method

what is the difference between physical and human capital?

if a², b²,c² are in a A.P .then prove that the following are also in A.P (i) 1/b+c ,1/c+a ,1/a+b (ii) a/b+c , b/a+c ,c/b+a

please give me an essay on unity in diversity in india