12x+2x^2-3=0

Simple and best practice solution for 12x+2x^2-3=0 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 12x+2x^2-3=0 equation:


Simplifying
12x + 2x2 + -3 = 0

Reorder the terms:
-3 + 12x + 2x2 = 0

Solving
-3 + 12x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
-1.5 + 6x + x2 = 0

Move the constant term to the right:

Add '1.5' to each side of the equation.
-1.5 + 6x + 1.5 + x2 = 0 + 1.5

Reorder the terms:
-1.5 + 1.5 + 6x + x2 = 0 + 1.5

Combine like terms: -1.5 + 1.5 = 0.0
0.0 + 6x + x2 = 0 + 1.5
6x + x2 = 0 + 1.5

Combine like terms: 0 + 1.5 = 1.5
6x + x2 = 1.5

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 = 1.5 + 9

Reorder the terms:
9 + 6x + x2 = 1.5 + 9

Combine like terms: 1.5 + 9 = 10.5
9 + 6x + x2 = 10.5

Factor a perfect square on the left side:
(x + 3)(x + 3) = 10.5

Calculate the square root of the right side: 3.240370349

Break this problem into two subproblems by setting 
(x + 3) equal to 3.240370349 and -3.240370349.

Subproblem 1

x + 3 = 3.240370349 Simplifying x + 3 = 3.240370349 Reorder the terms: 3 + x = 3.240370349 Solving 3 + x = 3.240370349 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 = 3.240370349 + -3 Combine like terms: 3 + -3 = 0 0 + x = 3.240370349 + -3 x = 3.240370349 + -3 Combine like terms: 3.240370349 + -3 = 0.240370349 x = 0.240370349 Simplifying x = 0.240370349

Subproblem 2

x + 3 = -3.240370349 Simplifying x + 3 = -3.240370349 Reorder the terms: 3 + x = -3.240370349 Solving 3 + x = -3.240370349 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 = -3.240370349 + -3 Combine like terms: 3 + -3 = 0 0 + x = -3.240370349 + -3 x = -3.240370349 + -3 Combine like terms: -3.240370349 + -3 = -6.240370349 x = -6.240370349 Simplifying x = -6.240370349

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.240370349, -6.240370349}

See similar equations:

| -4p^2=8p-12 | | 0=0.004(v^2-155v+7500) | | .24(12)+0.04x=0.08(6+x) | | 16t^2-160t=0 | | 4(x-2)+16=2(x+7) | | v^2-155v+7500=0 | | y=15*5+7 | | 75+5x-5=11x+4 | | (0.25)n=16 | | 21=-3(2d-5) | | 14+12b+-13b+10= | | 6+8p=37 | | -9x-30=-4x | | 3y^2+24y-7y-56= | | 16t^2-16t=0 | | x+2x+7+2x+10= | | 0.2(x+0.2)+0.5(x-0.4)=5.44 | | 4/6x1/4 | | -2(x+4)-3(y+3)= | | 3y^2+24-7y-56= | | 2x-5(-x-10)=1 | | -6g-4=-1g+2 | | y=2*5+6 | | 5x+20y=14x-7y | | 4.8t=12.6+6.2t | | -2=3(x+4)-4x | | 48-8z/7=-z | | (12a+4)(3a-3)=0 | | 10+75x+125x^2=0 | | 2a+5=-5a+9 | | -2x+20=3x+2 | | 3y^2+6y-2y-4= |

Equations solver categories