Answer:
-1/2 or 5
Step-by-step explanation:
9n = (2 * n^2) - 5 => n = -0.5 and n = 5
Answer:
Step-by-step explanation:
9·x = 2·x^2 - 5
2·x^2 - 9·x - 5 = 0
x^2 - 9/2·x - 5/2 = 0
x = 9/4 ± √(81/16 + 40/16) = 9/4 ± √(121/16) = 9/4 ± 11/4
x1 = -1/2 = -0.5 or x2 = 5
