4x^2-12x=8

Simple and best practice solution for 4x^2-12x=8 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 4x^2-12x=8 equation:


Simplifying
4x2 + -12x = 8

Reorder the terms:
-12x + 4x2 = 8

Solving
-12x + 4x2 = 8

Solving for variable 'x'.

Reorder the terms:
-8 + -12x + 4x2 = 8 + -8

Combine like terms: 8 + -8 = 0
-8 + -12x + 4x2 = 0

Factor out the Greatest Common Factor (GCF), '4'.
4(-2 + -3x + x2) = 0

Ignore the factor 4.

Subproblem 1

Set the factor '(-2 + -3x + x2)' equal to zero and attempt to solve: Simplifying -2 + -3x + x2 = 0 Solving -2 + -3x + x2 = 0 Begin completing the square. Move the constant term to the right: Add '2' to each side of the equation. -2 + -3x + 2 + x2 = 0 + 2 Reorder the terms: -2 + 2 + -3x + x2 = 0 + 2 Combine like terms: -2 + 2 = 0 0 + -3x + x2 = 0 + 2 -3x + x2 = 0 + 2 Combine like terms: 0 + 2 = 2 -3x + x2 = 2 The x term is -3x. Take half its coefficient (-1.5). Square it (2.25) and add it to both sides. Add '2.25' to each side of the equation. -3x + 2.25 + x2 = 2 + 2.25 Reorder the terms: 2.25 + -3x + x2 = 2 + 2.25 Combine like terms: 2 + 2.25 = 4.25 2.25 + -3x + x2 = 4.25 Factor a perfect square on the left side: (x + -1.5)(x + -1.5) = 4.25 Calculate the square root of the right side: 2.061552813 Break this problem into two subproblems by setting (x + -1.5) equal to 2.061552813 and -2.061552813.

Subproblem 1

x + -1.5 = 2.061552813 Simplifying x + -1.5 = 2.061552813 Reorder the terms: -1.5 + x = 2.061552813 Solving -1.5 + x = 2.061552813 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 2.061552813 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 2.061552813 + 1.5 x = 2.061552813 + 1.5 Combine like terms: 2.061552813 + 1.5 = 3.561552813 x = 3.561552813 Simplifying x = 3.561552813

Subproblem 2

x + -1.5 = -2.061552813 Simplifying x + -1.5 = -2.061552813 Reorder the terms: -1.5 + x = -2.061552813 Solving -1.5 + x = -2.061552813 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -2.061552813 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -2.061552813 + 1.5 x = -2.061552813 + 1.5 Combine like terms: -2.061552813 + 1.5 = -0.561552813 x = -0.561552813 Simplifying x = -0.561552813

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.561552813, -0.561552813}

Solution

x = {3.561552813, -0.561552813}

See similar equations:

| 2x^3-13x+10=0 | | 182=-9.7 | | 10x/6=380 | | 17-3y= | | (3-x)/(8x-24) | | 15.5-5y= | | n-16=19 | | -7x=(-42.7)3 | | h=-20t^2+80t | | -4x+(x+2)=12 | | h/9-19=-0 | | 10x+60=88 | | 2y+14.6= | | 12w=6w+18 | | x+42=-4x+13 | | 5.3y+0.27=3.02y-2.58 | | h=-20t^2-80t | | y-10.8=-2.6 | | 38=45-6(4-2w) | | 6n-5-8n=-7 | | 9.6+9.5x=-28.4 | | 200=360-2x | | 2=8b+6 | | 14.7+3y= | | 3x=8x+3 | | 120/70 | | 2x-5x=7-x | | 8x+120=7x | | 9x+4y=27 | | 16w-19w=15 | | 8-(1/3x)=16 | | 4x=(1.2)3 |

Equations solver categories