3x^2+12x-1040=0

Simple and best practice solution for 3x^2+12x-1040=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 3x^2+12x-1040=0 equation:


Simplifying
3x2 + 12x + -1040 = 0

Reorder the terms:
-1040 + 12x + 3x2 = 0

Solving
-1040 + 12x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
-346.6666667 + 4x + x2 = 0

Move the constant term to the right:

Add '346.6666667' to each side of the equation.
-346.6666667 + 4x + 346.6666667 + x2 = 0 + 346.6666667

Reorder the terms:
-346.6666667 + 346.6666667 + 4x + x2 = 0 + 346.6666667

Combine like terms: -346.6666667 + 346.6666667 = 0.0000000
0.0000000 + 4x + x2 = 0 + 346.6666667
4x + x2 = 0 + 346.6666667

Combine like terms: 0 + 346.6666667 = 346.6666667
4x + x2 = 346.6666667

The x term is 4x.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4x + 4 + x2 = 346.6666667 + 4

Reorder the terms:
4 + 4x + x2 = 346.6666667 + 4

Combine like terms: 346.6666667 + 4 = 350.6666667
4 + 4x + x2 = 350.6666667

Factor a perfect square on the left side:
(x + 2)(x + 2) = 350.6666667

Calculate the square root of the right side: 18.726095874

Break this problem into two subproblems by setting 
(x + 2) equal to 18.726095874 and -18.726095874.

Subproblem 1

x + 2 = 18.726095874 Simplifying x + 2 = 18.726095874 Reorder the terms: 2 + x = 18.726095874 Solving 2 + x = 18.726095874 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = 18.726095874 + -2 Combine like terms: 2 + -2 = 0 0 + x = 18.726095874 + -2 x = 18.726095874 + -2 Combine like terms: 18.726095874 + -2 = 16.726095874 x = 16.726095874 Simplifying x = 16.726095874

Subproblem 2

x + 2 = -18.726095874 Simplifying x + 2 = -18.726095874 Reorder the terms: 2 + x = -18.726095874 Solving 2 + x = -18.726095874 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + x = -18.726095874 + -2 Combine like terms: 2 + -2 = 0 0 + x = -18.726095874 + -2 x = -18.726095874 + -2 Combine like terms: -18.726095874 + -2 = -20.726095874 x = -20.726095874 Simplifying x = -20.726095874

Solution

The solution to the problem is based on the solutions from the subproblems. x = {16.726095874, -20.726095874}

See similar equations:

| y=3x^2+15x+8 | | 6z+6=10 | | n-6+5=6 | | 18a^2+48=0 | | y=tan(7x) | | 4x-8=4(x+2) | | n/11.62=2.5 | | -6.3x-5.5x=-17.464 | | -x-1=5x-7 | | 29-5x=9-10x | | lnx^6=6 | | 5n/3=14-6n | | 9a^2+48a+64=0 | | X+5+11x+12x=12x+y | | 7/6-3/4= | | x-10=4x-4 | | 1.6x+4.7=14.3 | | f(2)=0.6 | | X/9=3.14 | | f(2)=-5 | | 8+x=7x-4 | | 0=.0001x^2+.05x-2.5 | | -1=11+z | | -4x+1=-7x-8 | | 5/4-8r=-211/36 | | n+76.3=31,36 | | 2x-5y=0findslope | | 432=-8(7x+2) | | -4-6(9n-4)=-520 | | 59=-3x-7(-3x+7) | | 2(x-3)+6=4x-2(-2+x) | | 4x-2(-6x+8)=160 |

Equations solver categories