-4x**+ 4/9 = 0
-4x** = -4/9
x** = -4/9 * -1/4
x** = 1/9
x = 1/3
x = -1/3
-5x** + 5/16x = 0
5x(-x+ 1/16) = 0
5x = 0 -x+1/16 = 0
x = 0 -x = -1/16
x = 1/16
Решение задания приложено