x^2+2x=10-4x

Simple and best practice solution for x^2+2x=10-4x 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^2+2x=10-4x equation:


Simplifying
x2 + 2x = 10 + -4x

Reorder the terms:
2x + x2 = 10 + -4x

Solving
2x + x2 = 10 + -4x

Solving for variable 'x'.

Reorder the terms:
-10 + 2x + 4x + x2 = 10 + -4x + -10 + 4x

Combine like terms: 2x + 4x = 6x
-10 + 6x + x2 = 10 + -4x + -10 + 4x

Reorder the terms:
-10 + 6x + x2 = 10 + -10 + -4x + 4x

Combine like terms: 10 + -10 = 0
-10 + 6x + x2 = 0 + -4x + 4x
-10 + 6x + x2 = -4x + 4x

Combine like terms: -4x + 4x = 0
-10 + 6x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '10' to each side of the equation.
-10 + 6x + 10 + x2 = 0 + 10

Reorder the terms:
-10 + 10 + 6x + x2 = 0 + 10

Combine like terms: -10 + 10 = 0
0 + 6x + x2 = 0 + 10
6x + x2 = 0 + 10

Combine like terms: 0 + 10 = 10
6x + x2 = 10

The x term is 6x.  Take half its coefficient (3).
Square it (9) and add it to both sides.

Add '9' to each side of the equation.
6x + 9 + x2 = 10 + 9

Reorder the terms:
9 + 6x + x2 = 10 + 9

Combine like terms: 10 + 9 = 19
9 + 6x + x2 = 19

Factor a perfect square on the left side:
(x + 3)(x + 3) = 19

Calculate the square root of the right side: 4.358898944

Break this problem into two subproblems by setting 
(x + 3) equal to 4.358898944 and -4.358898944.

Subproblem 1

x + 3 = 4.358898944 Simplifying x + 3 = 4.358898944 Reorder the terms: 3 + x = 4.358898944 Solving 3 + x = 4.358898944 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = 4.358898944 + -3 Combine like terms: 3 + -3 = 0 0 + x = 4.358898944 + -3 x = 4.358898944 + -3 Combine like terms: 4.358898944 + -3 = 1.358898944 x = 1.358898944 Simplifying x = 1.358898944

Subproblem 2

x + 3 = -4.358898944 Simplifying x + 3 = -4.358898944 Reorder the terms: 3 + x = -4.358898944 Solving 3 + x = -4.358898944 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-3' to each side of the equation. 3 + -3 + x = -4.358898944 + -3 Combine like terms: 3 + -3 = 0 0 + x = -4.358898944 + -3 x = -4.358898944 + -3 Combine like terms: -4.358898944 + -3 = -7.358898944 x = -7.358898944 Simplifying x = -7.358898944

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.358898944, -7.358898944}

See similar equations:

| 3x+5=32-6x | | 2x^2+38x+180= | | 1*5(25-5a)=4-a | | 3(4s+10)=174 | | 6x+14y=-28 | | X+102+x+88=180 | | 53x-1+37x+1=180 | | 32x^2+18y^3+8x+9y^2=0 | | 2x+36=4x+18 | | 53x-1=37x+1 | | G/3:9 | | 1.4x=7.5 | | 7sinx+9cosx=11 | | n-56=49 | | 21-3(a-7)=2a+20 | | 4w-2=w+4 | | 4x+50+3x+46=180 | | 3x-7=7x+29 | | 9x-18=-90 | | 3x+40+x+22=90 | | Cos(72)=250/x | | 20-60-3x-6x=42 | | 6(-1+n)=102 | | 6r+3=87 | | (3x+4)+7x=(4+3x)+7x | | 25=8+v | | 3x*3x+1=28 | | F(x)=3350-4x | | 6m-5=2m+31 | | 6x-3+5+x=3(1-3x)+7(x+5) | | (2+3)+(4+5)=(4+5)+(2+3) | | 3x+19=3x-12 |

Equations solver categories