Question

Решите уравнение:
x^2+3x-4=0

Answer 1

1/2x^2+3x+4=0 / * 2
x^2 + 6x + 8 = 0
D = 6^2 - 4*8 = 36-32 = 4
√4 = 2
x1=(-6+2)/2=-4/2=-2
x2=(-6-2)/2=-8/2=-4