Question

Решите уравнение
12x*2-(3x-4)(4x+1)=19

Answer 1

12x*2-(3x-4)(4x+1)=19
24х - (12х^2 + 3x - 16x - 4) = 19
24x - 12x^2 - 3x + 16x + 4x = 19

41x - 12x^2 = 19

123 - 108 = 19

х = 3