Question

If f(x) = x(x+1)(2x+1) , prove that f(x)-f(x-1)= 6x2​

Answer 1

Step-by-step explanation:

f(x) ko solution krke uske baad f(x-1) rakhenge or phir usko solve krenge and again f(x) - f(x-1) krenge baki copy me sara solution kiya hua h