Question

-2/7,M, (-7/2)(M+2) ARE G.P FIND M

Answer 1

Answer:

if a , b , c in gp then we know that b²=ac

here also,

(-2/7)*(-7/2)(M+2)=M²

or, M²-M-2=0

or, (M-2)(M+1)=0

SO M=2 or -1