3x^2-5x+2=0

-7x^2+2x=0

x^2-2x-2=0

- 5x^2 + 7 = 0

x^2 + 9 x = 0

2x^2 + 3x - 8 = 0

- x^2 +9 = 0

данил1780    3   09.05.2020 23:30    0