a) x^2 - 6.25 > 0(x - 2.5)(x + 2.5) > 0x > 2.5 or x < -2.5
b) x^2 - 2x - 15 < 0(x - 5)(x + 3) < 0-3 < x < 5
c) Не указано неравенство.
a) x^2 - 6.25 > 0
(x - 2.5)(x + 2.5) > 0
x > 2.5 or x < -2.5
b) x^2 - 2x - 15 < 0
(x - 5)(x + 3) < 0
-3 < x < 5
c) Не указано неравенство.