Question

. Find the value of x if 2x, x+10 and 3x+10 are in A.P.​

Answer 1

Answer:

x=2$\sqrt{5}$

Step-by-step explanation:

formula is b^=4ac

which means (x+10)^2=(2x)(3x+10)

x^2+20x+100=6x^2+20x

5x^2=100

x=$\sqrt{20}$

x=2$\sqrt{5}$