Question

If S1, S2, S3 be the sums of the first n terms, 2n terms, 3n terms respectively of a G.P prove that 1.S1^2+S2^=S1(S2+S3)2.S1(S3-S2)=(S1+S2)^3​

Answer 1

Step-by-step explanation:

8 hope u understand. i skip some middle step to avoid length.