12+3x-2x^2=0

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


Simplifying
12 + 3x + -2x2 = 0

Solving
12 + 3x + -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'.
-6 + -1.5x + x2 = 0

Move the constant term to the right:

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

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

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

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

The x term is -1.5x.  Take half its coefficient (-0.75).
Square it (0.5625) and add it to both sides.

Add '0.5625' to each side of the equation.
-1.5x + 0.5625 + x2 = 6 + 0.5625

Reorder the terms:
0.5625 + -1.5x + x2 = 6 + 0.5625

Combine like terms: 6 + 0.5625 = 6.5625
0.5625 + -1.5x + x2 = 6.5625

Factor a perfect square on the left side:
(x + -0.75)(x + -0.75) = 6.5625

Calculate the square root of the right side: 2.561737691

Break this problem into two subproblems by setting 
(x + -0.75) equal to 2.561737691 and -2.561737691.

Subproblem 1

x + -0.75 = 2.561737691 Simplifying x + -0.75 = 2.561737691 Reorder the terms: -0.75 + x = 2.561737691 Solving -0.75 + x = 2.561737691 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = 2.561737691 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = 2.561737691 + 0.75 x = 2.561737691 + 0.75 Combine like terms: 2.561737691 + 0.75 = 3.311737691 x = 3.311737691 Simplifying x = 3.311737691

Subproblem 2

x + -0.75 = -2.561737691 Simplifying x + -0.75 = -2.561737691 Reorder the terms: -0.75 + x = -2.561737691 Solving -0.75 + x = -2.561737691 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.75' to each side of the equation. -0.75 + 0.75 + x = -2.561737691 + 0.75 Combine like terms: -0.75 + 0.75 = 0.00 0.00 + x = -2.561737691 + 0.75 x = -2.561737691 + 0.75 Combine like terms: -2.561737691 + 0.75 = -1.811737691 x = -1.811737691 Simplifying x = -1.811737691

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.311737691, -1.811737691}

See similar equations:

| x^6-0.64=0 | | 6x+10=4x+1 | | -7x-5-3(x+1)=-6x-3 | | -7x-5-3x-3=-6x-3 | | 9x+4x+5x+25+5x-10=360 | | -117=-6(6+4n)-3n | | 2x+20+x+40+3x+6x=360 | | 4h+1=17 | | Y/12=8/11 | | 5k-10+8=3k+4 | | 4y-12+2y-5=2y+7 | | x(8x+3)=4(2x^2+9) | | s*4+27=131 | | 14-2m=6 | | 2x-18=5x+3 | | -2=9+u | | 4x+6(3)=-6 | | W/5-15=1 | | 575p+155=2200 | | a*6+8=16 | | (4x-3)(4-x^2)=0 | | 5x+2x+10= | | 2x+5+61+2x+x+30+x=540 | | 8(x-2)-2=5x+3(-5+x) | | 9(-2)+8y=6 | | 4z/7=1 | | 3x(2x^2+6)(x-1)=0 | | 2s+3=9 | | -3(1+5x)=-123 | | 5x-6=3x-8/4 | | 10h+4=27 | | alogx=x |

Equations solver categories