1-4x-4x^2=0

Simple and best practice solution for 1-4x-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 1-4x-4x^2=0 equation:


Simplifying
1 + -4x + -4x2 = 0

Solving
1 + -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'.
-0.25 + x + x2 = 0

Move the constant term to the right:

Add '0.25' to each side of the equation.
-0.25 + x + 0.25 + x2 = 0 + 0.25

Reorder the terms:
-0.25 + 0.25 + x + x2 = 0 + 0.25

Combine like terms: -0.25 + 0.25 = 0.00
0.00 + x + x2 = 0 + 0.25
x + x2 = 0 + 0.25

Combine like terms: 0 + 0.25 = 0.25
x + x2 = 0.25

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 = 0.25 + 0.25

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

Combine like terms: 0.25 + 0.25 = 0.5
1.25 + x2 = 0.5

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

Calculate the square root of the right side: 0.707106781

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

Subproblem 1

x + 0.5 = 0.707106781 Simplifying x + 0.5 = 0.707106781 Reorder the terms: 0.5 + x = 0.707106781 Solving 0.5 + x = 0.707106781 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 = 0.707106781 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = 0.707106781 + -0.5 x = 0.707106781 + -0.5 Combine like terms: 0.707106781 + -0.5 = 0.207106781 x = 0.207106781 Simplifying x = 0.207106781

Subproblem 2

x + 0.5 = -0.707106781 Simplifying x + 0.5 = -0.707106781 Reorder the terms: 0.5 + x = -0.707106781 Solving 0.5 + x = -0.707106781 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 = -0.707106781 + -0.5 Combine like terms: 0.5 + -0.5 = 0.0 0.0 + x = -0.707106781 + -0.5 x = -0.707106781 + -0.5 Combine like terms: -0.707106781 + -0.5 = -1.207106781 x = -1.207106781 Simplifying x = -1.207106781

Solution

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

See similar equations:

| 11x+16=13x-10 | | -1/3w-5/3=5/3w-3/2 | | 5+8x=50+1/2x | | 4x=-2/5 | | 4(k+2)=40 | | 2x+9(-3x+9)=-19 | | 14x-5=6x+19 | | 81249.38=.25x | | -3t+6=3 | | 10.5v-9.5v-4.5=-6.2 | | xy+7=0 | | 27+5x-3= | | 9y-44=55 | | 5a+3b-6a-b= | | 4g-4-8-4g= | | -6z-6z=2z+8+5z | | 5(x-1)+3=3(x-1) | | C=(1/4)D-45 | | p^2+2p-48=0 | | 7/4+(-1/5) | | 2z-8z+2z=2z+6+3z | | 13=7+2f | | 0.14(y-7)+0.10y=0.04y-0.07 | | -6(x-d)= | | 180-x=20+180-2x | | 5x*(x-1)+3=3*(x-1) | | 0.14(y-7)+0.10=0.04y-0.7 | | b+b+19=4b | | p^2-10p+16=0 | | 3(5G+4)/4=25.5 | | -9(x-8)-9=63 | | 10d-10=5d+2.50 |

Equations solver categories