X*X+4X=2

Simple and best practice solution for X*X+4X=2 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=2 equation:


Simplifying
X * X + 4X = 2

Multiply X * X
X2 + 4X = 2

Reorder the terms:
4X + X2 = 2

Solving
4X + X2 = 2

Solving for variable 'X'.

Reorder the terms:
-2 + 4X + X2 = 2 + -2

Combine like terms: 2 + -2 = 0
-2 + 4X + X2 = 0

Begin completing the square.

Move the constant term to the right:

Add '2' to each side of the equation.
-2 + 4X + 2 + X2 = 0 + 2

Reorder the terms:
-2 + 2 + 4X + X2 = 0 + 2

Combine like terms: -2 + 2 = 0
0 + 4X + X2 = 0 + 2
4X + X2 = 0 + 2

Combine like terms: 0 + 2 = 2
4X + X2 = 2

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 = 2 + 4

Reorder the terms:
4 + 4X + X2 = 2 + 4

Combine like terms: 2 + 4 = 6
4 + 4X + X2 = 6

Factor a perfect square on the left side:
(X + 2)(X + 2) = 6

Calculate the square root of the right side: 2.449489743

Break this problem into two subproblems by setting 
(X + 2) equal to 2.449489743 and -2.449489743.

Subproblem 1

X + 2 = 2.449489743 Simplifying X + 2 = 2.449489743 Reorder the terms: 2 + X = 2.449489743 Solving 2 + X = 2.449489743 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 = 2.449489743 + -2 Combine like terms: 2 + -2 = 0 0 + X = 2.449489743 + -2 X = 2.449489743 + -2 Combine like terms: 2.449489743 + -2 = 0.449489743 X = 0.449489743 Simplifying X = 0.449489743

Subproblem 2

X + 2 = -2.449489743 Simplifying X + 2 = -2.449489743 Reorder the terms: 2 + X = -2.449489743 Solving 2 + X = -2.449489743 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 = -2.449489743 + -2 Combine like terms: 2 + -2 = 0 0 + X = -2.449489743 + -2 X = -2.449489743 + -2 Combine like terms: -2.449489743 + -2 = -4.449489743 X = -4.449489743 Simplifying X = -4.449489743

Solution

The solution to the problem is based on the solutions from the subproblems. X = {0.449489743, -4.449489743}

See similar equations:

| x^4+3x^3=10000 | | 10x^2+20x-30= | | X*X+13X=-12 | | 100000=19X | | 6+3x=-x+14 | | -50=4-3n | | 3*X*X+9X=0 | | 0.75d+0.375=2d-0.5 | | y=-16x^2+20x+3 | | -(5/3)x=-30 | | 22x^3-33x^2+55x^5= | | 14x-(7-4x)=5x+32 | | -2+3x=-5x-2 | | 40/=28/14 | | 6x+100y=960 | | 27=5a+9-11a | | 5x+4=28-x | | 5x=780-80y | | 7x10/7-1 | | 56=3x-4x+7 | | 52004=4x+52004 | | 6n+3n=8 | | X^3+2x^2-5x+2=9 | | K-2=4.8 | | 3p^2+13p-12=0 | | 5x=780-8y | | 2x=3x+35 | | 10y=6x+9 | | 4m-10=m+3m-2m | | 5(4x-2x)=40 | | 20-(x-7)=7x-3 | | -4x-3+x=-24 |

Equations solver categories