Question

Решите уравнения:
a) 3x^2+2x-1/x+1=5
б) x/x-4 -2/x+4=32/x^2-16
в) 1/2x-x^2 +x-4/2x+x^2=2/4-x

Answer 1

A) 3x²+2x-1 x + 1=5
3x²+2x-1 x-4=0
3x²+2x-1-4=0
3x²+2x-5=0 (квадратное уравнение)
D=4+4*3*5=64
x1=-2+8 2*6=0.5
x2=-2-82*6=-56

Answer 2

B) 1/2x-x^2 +x-4/2x+x^2=2/4-x

Answer 3

12x+x-42x + x = 24

Answer 4

x=1