X*X+4X=1

Simple and best practice solution for X*X+4X=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 X*X+4X=1 equation:


Simplifying
X * X + 4X = 1

Multiply X * X
X2 + 4X = 1

Reorder the terms:
4X + X2 = 1

Solving
4X + X2 = 1

Solving for variable 'X'.

Reorder the terms:
-1 + 4X + X2 = 1 + -1

Combine like terms: 1 + -1 = 0
-1 + 4X + X2 = 0

Begin completing the square.

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + 4X + 1 + X2 = 0 + 1

Reorder the terms:
-1 + 1 + 4X + X2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + 4X + X2 = 0 + 1
4X + X2 = 0 + 1

Combine like terms: 0 + 1 = 1
4X + X2 = 1

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 = 1 + 4

Reorder the terms:
4 + 4X + X2 = 1 + 4

Combine like terms: 1 + 4 = 5
4 + 4X + X2 = 5

Factor a perfect square on the left side:
(X + 2)(X + 2) = 5

Calculate the square root of the right side: 2.236067978

Break this problem into two subproblems by setting 
(X + 2) equal to 2.236067978 and -2.236067978.

Subproblem 1

X + 2 = 2.236067978 Simplifying X + 2 = 2.236067978 Reorder the terms: 2 + X = 2.236067978 Solving 2 + X = 2.236067978 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 = 2.236067978 + -2 Combine like terms: 2 + -2 = 0 0 + X = 2.236067978 + -2 X = 2.236067978 + -2 Combine like terms: 2.236067978 + -2 = 0.236067978 X = 0.236067978 Simplifying X = 0.236067978

Subproblem 2

X + 2 = -2.236067978 Simplifying X + 2 = -2.236067978 Reorder the terms: 2 + X = -2.236067978 Solving 2 + X = -2.236067978 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 = -2.236067978 + -2 Combine like terms: 2 + -2 = 0 0 + X = -2.236067978 + -2 X = -2.236067978 + -2 Combine like terms: -2.236067978 + -2 = -4.236067978 X = -4.236067978 Simplifying X = -4.236067978

Solution

The solution to the problem is based on the solutions from the subproblems. X = {0.236067978, -4.236067978}

See similar equations:

| 956=10v+56 | | 4k+14=-23 | | X*X-12X=-35 | | 98/50 | | 506=550-s | | 3z-4=5z-6 | | 5+3lnx=9 | | 18-15b=-6-13b | | 0.2x-0.7=1.9 | | 14-6x=26 | | 4(d+16)-3=11 | | -5x+2=15 | | 359-g=340 | | 32-p=19 | | 7(t-2)=8-(-6) | | -(g+10)=-17 | | 2t-60=78 | | 4x+21=93 | | -4(w-19)+3=3 | | 4h+(y-6)=8(H-5) | | 4x^2+39=0 | | 8c=-18+9c | | 4v-30=54 | | -4=-12/s | | 3x-3+7=4x+2-6-3x | | -4x-4y=-4 | | 34=-39-b | | 6x+3y+36=0 | | 14d-13d=18 | | 2r-27=21 | | 2t=14+4t | | -14x+20y=-8 |

Equations solver categories