5-4x-4x^2=0

Simple and best practice solution for 5-4x-4x^2=0 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 5-4x-4x^2=0 equation:


Simplifying
5 + -4x + -4x2 = 0

Solving
5 + -4x + -4x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
-1.25 + x + x2 = 0

Move the constant term to the right:

Add '1.25' to each side of the equation.
-1.25 + x + 1.25 + x2 = 0 + 1.25

Reorder the terms:
-1.25 + 1.25 + x + x2 = 0 + 1.25

Combine like terms: -1.25 + 1.25 = 0.00
0.00 + x + x2 = 0 + 1.25
x + x2 = 0 + 1.25

Combine like terms: 0 + 1.25 = 1.25
x + x2 = 1.25

The x term is x.  Take half its coefficient (0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
 + 0.25 + x2 = 1.25 + 0.25

Combine like terms:  + 0.25 = 1.25
1.25 + x2 = 1.25 + 0.25

Combine like terms: 1.25 + 0.25 = 1.5
1.25 + x2 = 1.5

Factor a perfect square on the left side:
(x + 0.5)(x + 0.5) = 1.5

Calculate the square root of the right side: 1.224744871

Break this problem into two subproblems by setting 
(x + 0.5) equal to 1.224744871 and -1.224744871.

Subproblem 1

x + 0.5 = 1.224744871 Simplifying x + 0.5 = 1.224744871 Reorder the terms: 0.5 + x = 1.224744871 Solving 0.5 + x = 1.224744871 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = 1.224744871 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 1.224744871 + -0.5 x = 1.224744871 + -0.5 Combine like terms: 1.224744871 + -0.5 = 0.724744871 x = 0.724744871 Simplifying x = 0.724744871

Subproblem 2

x + 0.5 = -1.224744871 Simplifying x + 0.5 = -1.224744871 Reorder the terms: 0.5 + x = -1.224744871 Solving 0.5 + x = -1.224744871 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.5' to each side of the equation. 0.5 + -0.5 + x = -1.224744871 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -1.224744871 + -0.5 x = -1.224744871 + -0.5 Combine like terms: -1.224744871 + -0.5 = -1.724744871 x = -1.724744871 Simplifying x = -1.724744871

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.724744871, -1.724744871}

See similar equations:

| 3(x-6)=3x+7 | | -5(2f-6)= | | 5(x-3)=x+12 | | 15=16+3x | | 3x^2=x(kx+8)+2 | | 12x^2-46x-36=0 | | 2v^2-1v+0=0 | | 5y-13y=-28-36 | | 5m^2-38m+48=0 | | 9=10 | | 81-x=-39 | | 4x-(3x-5)=2x+11 | | x-2.3=1.1 | | 2x-x=-5+3 | | a-12=36 | | 5+2x=3+x | | 8x-4+3x=7x+x-14 | | -12=28x+39 | | 4-y=26 | | 4m^2-6=46 | | 10=3c+1 | | 4x-9y=-68 | | 2s+4=10 | | -10+.25t=5 | | -10+.25t=-5 | | 9-2u=3 | | 4x+12-8x=24-6x | | 7a^2+80a+100=0 | | x^2+3x-18=9x-2 | | 1+(x+4)=8 | | 70=-7(-2--2) | | 7x+4y=34 |

Equations solver categories