0=-x^2+4x+4

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


Simplifying
0 = -1x2 + 4x + 4

Reorder the terms:
0 = 4 + 4x + -1x2

Solving
0 = 4 + 4x + -1x2

Solving for variable 'x'.

Combine like terms: 0 + -4 = -4
-4 + -4x + x2 = 4 + 4x + -1x2 + -4 + -4x + x2

Reorder the terms:
-4 + -4x + x2 = 4 + -4 + 4x + -4x + -1x2 + x2

Combine like terms: 4 + -4 = 0
-4 + -4x + x2 = 0 + 4x + -4x + -1x2 + x2
-4 + -4x + x2 = 4x + -4x + -1x2 + x2

Combine like terms: 4x + -4x = 0
-4 + -4x + x2 = 0 + -1x2 + x2
-4 + -4x + x2 = -1x2 + x2

Combine like terms: -1x2 + x2 = 0
-4 + -4x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '4' to each side of the equation.
-4 + -4x + 4 + x2 = 0 + 4

Reorder the terms:
-4 + 4 + -4x + x2 = 0 + 4

Combine like terms: -4 + 4 = 0
0 + -4x + x2 = 0 + 4
-4x + x2 = 0 + 4

Combine like terms: 0 + 4 = 4
-4x + x2 = 4

The x term is -4x.  Take half its coefficient (-2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
-4x + 4 + x2 = 4 + 4

Reorder the terms:
4 + -4x + x2 = 4 + 4

Combine like terms: 4 + 4 = 8
4 + -4x + x2 = 8

Factor a perfect square on the left side:
(x + -2)(x + -2) = 8

Calculate the square root of the right side: 2.828427125

Break this problem into two subproblems by setting 
(x + -2) equal to 2.828427125 and -2.828427125.

Subproblem 1

x + -2 = 2.828427125 Simplifying x + -2 = 2.828427125 Reorder the terms: -2 + x = 2.828427125 Solving -2 + x = 2.828427125 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = 2.828427125 + 2 Combine like terms: -2 + 2 = 0 0 + x = 2.828427125 + 2 x = 2.828427125 + 2 Combine like terms: 2.828427125 + 2 = 4.828427125 x = 4.828427125 Simplifying x = 4.828427125

Subproblem 2

x + -2 = -2.828427125 Simplifying x + -2 = -2.828427125 Reorder the terms: -2 + x = -2.828427125 Solving -2 + x = -2.828427125 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '2' to each side of the equation. -2 + 2 + x = -2.828427125 + 2 Combine like terms: -2 + 2 = 0 0 + x = -2.828427125 + 2 x = -2.828427125 + 2 Combine like terms: -2.828427125 + 2 = -0.828427125 x = -0.828427125 Simplifying x = -0.828427125

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.828427125, -0.828427125}

See similar equations:

| 12x+12=72-12x | | 0.5x-30=1.1x | | 17+15x=7x-25 | | 10-r=7 | | 4y-1=180 | | d=t^2+70t | | -15x-6=9-15x | | x/5-1=-12 | | 3.4/6.223= | | (3x-1)/x^2=0 | | 4y-1+3x=180 | | x/3=(-2)2 | | A+b=145 | | W^2=w | | 2x^2+5y-10=0 | | 7x-(4x-5)=17 | | -8x-15=-111-8x | | 2x-1=1.0 | | x^2+y^2+14x+10y=26 | | a-38.4=24.8 | | 28-[4+10y-4(y+3)]= | | 6x*(3-x)= | | -9y-14=3y+10 | | 6/42=x/140 | | 4(n+2)=3(n-4) | | 3(2-x)+5(2x-4)=12x-6 | | a-38.4=56 | | 58=1+3n | | X+31=60 | | (7x-27)=(4x+6) | | 1320=.5(32)x^2 | | a^4+4a^3+2a^2-4a-3=0 |

Equations solver categories