3x^2-2x=3

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


Simplifying
3x2 + -2x = 3

Reorder the terms:
-2x + 3x2 = 3

Solving
-2x + 3x2 = 3

Solving for variable 'x'.

Reorder the terms:
-3 + -2x + 3x2 = 3 + -3

Combine like terms: 3 + -3 = 0
-3 + -2x + 3x2 = 0

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

Divide each side by '3'.
-1 + -0.6666666667x + x2 = 0

Move the constant term to the right:

Add '1' to each side of the equation.
-1 + -0.6666666667x + 1 + x2 = 0 + 1

Reorder the terms:
-1 + 1 + -0.6666666667x + x2 = 0 + 1

Combine like terms: -1 + 1 = 0
0 + -0.6666666667x + x2 = 0 + 1
-0.6666666667x + x2 = 0 + 1

Combine like terms: 0 + 1 = 1
-0.6666666667x + x2 = 1

The x term is -0.6666666667x.  Take half its coefficient (-0.3333333334).
Square it (0.1111111112) and add it to both sides.

Add '0.1111111112' to each side of the equation.
-0.6666666667x + 0.1111111112 + x2 = 1 + 0.1111111112

Reorder the terms:
0.1111111112 + -0.6666666667x + x2 = 1 + 0.1111111112

Combine like terms: 1 + 0.1111111112 = 1.1111111112
0.1111111112 + -0.6666666667x + x2 = 1.1111111112

Factor a perfect square on the left side:
(x + -0.3333333334)(x + -0.3333333334) = 1.1111111112

Calculate the square root of the right side: 1.054092553

Break this problem into two subproblems by setting 
(x + -0.3333333334) equal to 1.054092553 and -1.054092553.

Subproblem 1

x + -0.3333333334 = 1.054092553 Simplifying x + -0.3333333334 = 1.054092553 Reorder the terms: -0.3333333334 + x = 1.054092553 Solving -0.3333333334 + x = 1.054092553 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3333333334' to each side of the equation. -0.3333333334 + 0.3333333334 + x = 1.054092553 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + x = 1.054092553 + 0.3333333334 x = 1.054092553 + 0.3333333334 Combine like terms: 1.054092553 + 0.3333333334 = 1.3874258864 x = 1.3874258864 Simplifying x = 1.3874258864

Subproblem 2

x + -0.3333333334 = -1.054092553 Simplifying x + -0.3333333334 = -1.054092553 Reorder the terms: -0.3333333334 + x = -1.054092553 Solving -0.3333333334 + x = -1.054092553 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3333333334' to each side of the equation. -0.3333333334 + 0.3333333334 + x = -1.054092553 + 0.3333333334 Combine like terms: -0.3333333334 + 0.3333333334 = 0.0000000000 0.0000000000 + x = -1.054092553 + 0.3333333334 x = -1.054092553 + 0.3333333334 Combine like terms: -1.054092553 + 0.3333333334 = -0.7207592196 x = -0.7207592196 Simplifying x = -0.7207592196

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.3874258864, -0.7207592196}

See similar equations:

| 2[g-7]=16 | | 6x+16=8x-2 | | 2u^2-5u-12=u^2-8u+16 | | (15/6)p=-3 | | -2x-5-2x=35 | | 4+7x=-6x+69 | | 1/6b+2/3=-8 | | r/5+2.1=4.8 | | -2y=6-x | | 5x+24x-5= | | 11x-8=10x | | -17x-15=12 | | 150=6(-12n-10) | | 0.5*85= | | 2y=6-x | | rx-st=r | | 20b^3t^6/4b^-3t^9 | | 0.2*24= | | t/15-10=14 | | 40=-5/6(9+2X) | | 3.8m-0.6=1.4-0.2 | | 0.6*91= | | x^2-40x+400=625 | | x+95=x+95 | | -8-5x=x-8 | | 1/1(4*8) | | 12x+134x+16x=34 | | (8-3)(5-9)= | | 5/8(2x-1)=32 | | 7+z/6=32 | | -4=2-4 | | 3x^2+12y=0 |

Equations solver categories