2*x-(4/x)-7

Simple and best practice solution for 2*x-(4/x)-7 equation. Check how easy it is, and learn it for the future. Our solution is simple, and easy to understand, so don`t hesitate to use it as a solution of your homework.

If it's not what You are looking for type in the equation solver your own equation and let us solve it.

Solution for 2*x-(4/x)-7 equation: 


D( x )

x = 0

x = 0

x = 0

x in (-oo:0) U (0:+oo)

2*x-(4/x)-7 = 0

2*x-4*x^-1-7 = 0

2*x^1-4*x^-1-7*x^0 = 0

(2*x^2-7*x^1-4*x^0)/(x^1) = 0 // * x^2

x^1*(2*x^2-7*x^1-4*x^0) = 0

x^1

2*x^2-7*x-4 = 0

2*x^2-7*x-4 = 0

DELTA = (-7)^2-(-4*2*4)

DELTA = 81

DELTA > 0

x = (81^(1/2)+7)/(2*2) or x = (7-81^(1/2))/(2*2)

x = 4 or x = -1/2

x in { -1/2, 4} 

x in { -1/2, 4 }

See similar equations:

| 2m+3=5m-12 | | f(x)=8x^3-10x^2+2x-16 | | 2x-6=9x | | 4x+32=86 | | 6x-5y=172 | | 6x-5=12-(x+3) | | 9/2-4 | | 7u^3=3u | | 3+9lnx=66 | | 5x-10=2x-12 | | 50=2(15)+2c | | -8(-8)=64 | | (3w+9)(w)=210 | | 1.3+x=.1 | | ln(11x-1)=5 | | g(x)=-4x^2-12x+1 | | y=ux+w | | 36=(x-3)2 | | 4m+5=19 | | -4=7(x-6) | | x-4(x+1)=4x-15 | | 4X-8X-20=12 | | 17y/30-2=6-5y/6 | | Y/2=6.5 | | -20x+20*ln(x)+30=0 | | 3*3x-5=4x+20 | | 6(c)=684 | | (X^2-4)/X | | 2-7b=n | | 6c=684 | | (N+9)=6n+54 | | x^2-5x-4=9 |

Equations solver categories