= (2 280 + 696 264) : (84 * 11) + (269 - 37) = 988
1) 2 280 + 696 264 = 698 544
2) 84 * 11 = 924
3) 269 - 37 = 232
4) 698 544 : 924 = 756
5) 756 + 232 = 988
25-36x^2=0
(5-6x)(5+6x)=0
5-6x=0 5+6x=0
-6x=-5 6x=-5
x=5:6 x=-5:6
x=5/6 x=-5/6
Ответ: x=5/6; -5/6,