Question

1.2x(5x+4)-1/3*x(6x-3)-9.8=0

Answer 1

2x(5x+4)-1/3*x(6x-3)-9.8=0
x^2 +1.125x - 1.225 = 0
квадратное уравнение
D=1.125^2 - 4*(-1.225) =6.165625
x = 1/2 ( -1.125 +/-√6.165625)
x1 = - 1.80403
x2 = 0.679034