3x^2-3x=4

Simple and best practice solution for 3x^2-3x=4 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 3x^2-3x=4 equation:


Simplifying
3x2 + -3x = 4

Reorder the terms:
-3x + 3x2 = 4

Solving
-3x + 3x2 = 4

Solving for variable 'x'.

Reorder the terms:
-4 + -3x + 3x2 = 4 + -4

Combine like terms: 4 + -4 = 0
-4 + -3x + 3x2 = 0

Begin completing the square.  Divide all terms by
3 the coefficient of the squared term: 

Divide each side by '3'.
-1.333333333 + -1x + x2 = 0

Move the constant term to the right:

Add '1.333333333' to each side of the equation.
-1.333333333 + -1x + 1.333333333 + x2 = 0 + 1.333333333

Reorder the terms:
-1.333333333 + 1.333333333 + -1x + x2 = 0 + 1.333333333

Combine like terms: -1.333333333 + 1.333333333 = 0.000000000
0.000000000 + -1x + x2 = 0 + 1.333333333
-1x + x2 = 0 + 1.333333333

Combine like terms: 0 + 1.333333333 = 1.333333333
-1x + x2 = 1.333333333

The x term is -1x.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1x + 0.25 + x2 = 1.333333333 + 0.25

Reorder the terms:
0.25 + -1x + x2 = 1.333333333 + 0.25

Combine like terms: 1.333333333 + 0.25 = 1.583333333
0.25 + -1x + x2 = 1.583333333

Factor a perfect square on the left side:
(x + -0.5)(x + -0.5) = 1.583333333

Calculate the square root of the right side: 1.258305739

Break this problem into two subproblems by setting 
(x + -0.5) equal to 1.258305739 and -1.258305739.

Subproblem 1

x + -0.5 = 1.258305739 Simplifying x + -0.5 = 1.258305739 Reorder the terms: -0.5 + x = 1.258305739 Solving -0.5 + x = 1.258305739 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = 1.258305739 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = 1.258305739 + 0.5 x = 1.258305739 + 0.5 Combine like terms: 1.258305739 + 0.5 = 1.758305739 x = 1.758305739 Simplifying x = 1.758305739

Subproblem 2

x + -0.5 = -1.258305739 Simplifying x + -0.5 = -1.258305739 Reorder the terms: -0.5 + x = -1.258305739 Solving -0.5 + x = -1.258305739 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + x = -1.258305739 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + x = -1.258305739 + 0.5 x = -1.258305739 + 0.5 Combine like terms: -1.258305739 + 0.5 = -0.758305739 x = -0.758305739 Simplifying x = -0.758305739

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.758305739, -0.758305739}

See similar equations:

| X=1/2(138) | | 2x+3+4x-11=180 | | mx^2-6x+m=0 | | -8y+4=15 | | w/15=26=42 | | u/15=26=42 | | 6-2(1-w)=(-38)-4w | | 1=-12c+4 | | -1.1y=77 | | 5=11-6n | | 5=e+11.2 | | 5/3x=32-x | | 4(3+9)=X(2+27) | | 17+n=30 | | 6x^2-234x+1620=0 | | X=1/2(100+200) | | 200=7.50s-150+1.50s | | 7x-17.65=6.7 | | X=1/2(60+80) | | 6x-3(x-1)=3x+9 | | 0=2(x^2-3x-200) | | 4(7x-43)=80 | | 5x-1y=-14 | | 5x+8=9x-4 | | 3x^2-117x+810=0 | | 7=r/6-3 | | (4h^3k^2/7)×(21hk^5/2)= | | 0.7x+10.4=x-5.41 | | (x+106)+(x+190)+x=1331 | | (4h^3k^2/7)×(21hk^5/2 | | 4.5p-15-7.5p=3 | | 6x+12=5x+15 |

Equations solver categories