4c^2-4c-1=

Simple and best practice solution for 4c^2-4c-1= 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 4c^2-4c-1= equation:


Simplifying
4c2 + -4c + -1 = 0

Reorder the terms:
-1 + -4c + 4c2 = 0

Solving
-1 + -4c + 4c2 = 0

Solving for variable 'c'.

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

Divide each side by '4'.
-0.25 + -1c + c2 = 0

Move the constant term to the right:

Add '0.25' to each side of the equation.
-0.25 + -1c + 0.25 + c2 = 0 + 0.25

Reorder the terms:
-0.25 + 0.25 + -1c + c2 = 0 + 0.25

Combine like terms: -0.25 + 0.25 = 0.00
0.00 + -1c + c2 = 0 + 0.25
-1c + c2 = 0 + 0.25

Combine like terms: 0 + 0.25 = 0.25
-1c + c2 = 0.25

The c term is -1c.  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.
-1c + 0.25 + c2 = 0.25 + 0.25

Reorder the terms:
0.25 + -1c + c2 = 0.25 + 0.25

Combine like terms: 0.25 + 0.25 = 0.5
0.25 + -1c + c2 = 0.5

Factor a perfect square on the left side:
(c + -0.5)(c + -0.5) = 0.5

Calculate the square root of the right side: 0.707106781

Break this problem into two subproblems by setting 
(c + -0.5) equal to 0.707106781 and -0.707106781.

Subproblem 1

c + -0.5 = 0.707106781 Simplifying c + -0.5 = 0.707106781 Reorder the terms: -0.5 + c = 0.707106781 Solving -0.5 + c = 0.707106781 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + c = 0.707106781 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + c = 0.707106781 + 0.5 c = 0.707106781 + 0.5 Combine like terms: 0.707106781 + 0.5 = 1.207106781 c = 1.207106781 Simplifying c = 1.207106781

Subproblem 2

c + -0.5 = -0.707106781 Simplifying c + -0.5 = -0.707106781 Reorder the terms: -0.5 + c = -0.707106781 Solving -0.5 + c = -0.707106781 Solving for variable 'c'. Move all terms containing c to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + c = -0.707106781 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + c = -0.707106781 + 0.5 c = -0.707106781 + 0.5 Combine like terms: -0.707106781 + 0.5 = -0.207106781 c = -0.207106781 Simplifying c = -0.207106781

Solution

The solution to the problem is based on the solutions from the subproblems. c = {1.207106781, -0.207106781}

See similar equations:

| n/2-4=6 | | 3xy(3x+7y)= | | 8+18m-6=9m+13-2m | | 5w-17w=-24 | | -5s-8=-2 | | 3.9x+2=24.3 | | 5w-17w=24 | | 2+3/2u-6=-5/u-3 | | 2w-5w=-6 | | 5p^2+24=16 | | X^4+9x^2=22 | | -39=-6v+3(v-4) | | 5(5y-3)=20y | | (4x^5y^3)(3x^8y^7)/6x^4y^10 | | 1/6z=-3 | | f*(3y)=-2x+3 | | 4p+11p=60 | | y^2+2x+2y+xy= | | x^4+4x^3-6x^2-4x+1=0 | | X^4+7x^2=78 | | y=-5x-3 | | x/13=-15 | | (-7v^2+3v-2)+(5v^2+4v+6)= | | 2x(6+4)-4y=13 | | 6/(5x)=54 | | 2(u+2)-u=3(u-1)+9 | | 14y=13(y+10) | | 6x^2-7x+11= | | (2/x^3)=0 | | -2y-30=6(y+7) | | -5/4v+5/6=-3/8+5/8 | | 10x+24=-36 |

Equations solver categories