x^2+6x=349

Simple and best practice solution for x^2+6x=349 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+6x=349 equation:


Simplifying
x2 + 6x = 349

Reorder the terms:
6x + x2 = 349

Solving
6x + x2 = 349

Solving for variable 'x'.

Reorder the terms:
-349 + 6x + x2 = 349 + -349

Combine like terms: 349 + -349 = 0
-349 + 6x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '349' to each side of the equation.
-349 + 6x + 349 + x2 = 0 + 349

Reorder the terms:
-349 + 349 + 6x + x2 = 0 + 349

Combine like terms: -349 + 349 = 0
0 + 6x + x2 = 0 + 349
6x + x2 = 0 + 349

Combine like terms: 0 + 349 = 349
6x + x2 = 349

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 = 349 + 9

Reorder the terms:
9 + 6x + x2 = 349 + 9

Combine like terms: 349 + 9 = 358
9 + 6x + x2 = 358

Factor a perfect square on the left side:
(x + 3)(x + 3) = 358

Calculate the square root of the right side: 18.920887928

Break this problem into two subproblems by setting 
(x + 3) equal to 18.920887928 and -18.920887928.

Subproblem 1

x + 3 = 18.920887928 Simplifying x + 3 = 18.920887928 Reorder the terms: 3 + x = 18.920887928 Solving 3 + x = 18.920887928 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 = 18.920887928 + -3 Combine like terms: 3 + -3 = 0 0 + x = 18.920887928 + -3 x = 18.920887928 + -3 Combine like terms: 18.920887928 + -3 = 15.920887928 x = 15.920887928 Simplifying x = 15.920887928

Subproblem 2

x + 3 = -18.920887928 Simplifying x + 3 = -18.920887928 Reorder the terms: 3 + x = -18.920887928 Solving 3 + x = -18.920887928 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 = -18.920887928 + -3 Combine like terms: 3 + -3 = 0 0 + x = -18.920887928 + -3 x = -18.920887928 + -3 Combine like terms: -18.920887928 + -3 = -21.920887928 x = -21.920887928 Simplifying x = -21.920887928

Solution

The solution to the problem is based on the solutions from the subproblems. x = {15.920887928, -21.920887928}

See similar equations:

| 0.042x+5.189=0.030x+5.183 | | 2(3x-5)-4(2-x)= | | 4x-100=7 | | 7x+(-4x)= | | 2(2x+5)+6=4(x-3)+2x | | 11x=19x | | -8x+4=2x+24 | | -22+4x=8-x | | 7x/y+2=4z | | a^2/2+a/4+a/4=0 | | -12-3x=-5x+18 | | x+1=56/x | | (3x+4)(5x-3)= | | 8X-40=6X+40 | | 337+5*(337/16) | | 78=-3(-6x-2) | | 4x^2+4x-a^2+1=0 | | 4Z+3X-11=5X+19 | | .07x+.09(8.000-x)=680 | | 8s+7=4 | | -7x+9=-12 | | 175000.00+550.00b=220650.00 | | x+5(x/16)=443 | | 6X+25=4X+25 | | 31-6x=2x-17 | | -1(x+7)=-6x+8 | | 35000.00+1680.00b=300440.00 | | -6x-5(2x-3)=95 | | -5(2x+2)+5=3x | | 6y-12y=-29-37 | | .5(h+4)+2=3(2-h) | | 5(x-3)=-2(-2x+5) |

Equations solver categories