Question

Find the value of x so that -6, x, 8 are in AP

Answer 1

Step-by-step explanation:

so here. x,8,y is in GP so 8 = √xy ⇒ 64/x = y . .... i. and x,y,-8 in AP so 2y = x - 8 .... ii. using i and ii. we get. 128/x = x - 8. ⇒ 128 = x^2 - 8x.