Answer:
x, x+2, x+4
(x+2)^2 - 4(x) = 6(x + 4) + 7
x^2 + 4x + 4 - 4x = 6x + 24 + 7
x^2 - 6x - 27 = 0
x = 9 (∨ x = -3)
The three numbers are
9, 11, 13
but it could be also
-3, -1, 1
Answer: 4188.8
Step-by-step explanation: