Answer:
-6/5 (This is Answer c)
Explanation:
Re-writing this equation in standard form, we get:
25x^2 + 60x + 36 = 0. The coefficients are a = 25, b = 60 and c = 36.
The discriminant, b^2 - 4ac, is 60^2 - 4(25)(36), or 3600 - 3600, or 0.
Because the discriminant is 0, we have two real, equal roots, corresponding to
-b -60
x = ------ = ---------- = -6/5 (This is Answer c)
2a 2(25)