0=.5x^2+5x+12

Simple and best practice solution for 0=.5x^2+5x+12 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 0=.5x^2+5x+12 equation:


Simplifying
0 = 0.5x2 + 5x + 12

Reorder the terms:
0 = 12 + 5x + 0.5x2

Solving
0 = 12 + 5x + 0.5x2

Solving for variable 'x'.

Combine like terms: 0 + -12 = -12
-12 + -5x + -0.5x2 = 12 + 5x + 0.5x2 + -12 + -5x + -0.5x2

Reorder the terms:
-12 + -5x + -0.5x2 = 12 + -12 + 5x + -5x + 0.5x2 + -0.5x2

Combine like terms: 12 + -12 = 0
-12 + -5x + -0.5x2 = 0 + 5x + -5x + 0.5x2 + -0.5x2
-12 + -5x + -0.5x2 = 5x + -5x + 0.5x2 + -0.5x2

Combine like terms: 5x + -5x = 0
-12 + -5x + -0.5x2 = 0 + 0.5x2 + -0.5x2
-12 + -5x + -0.5x2 = 0.5x2 + -0.5x2

Combine like terms: 0.5x2 + -0.5x2 = 0.0
-12 + -5x + -0.5x2 = 0.0

Begin completing the square.  Divide all terms by
-0.5 the coefficient of the squared term: 

Divide each side by '-0.5'.
24 + 10x + x2 = 0

Move the constant term to the right:

Add '-24' to each side of the equation.
24 + 10x + -24 + x2 = 0 + -24

Reorder the terms:
24 + -24 + 10x + x2 = 0 + -24

Combine like terms: 24 + -24 = 0
0 + 10x + x2 = 0 + -24
10x + x2 = 0 + -24

Combine like terms: 0 + -24 = -24
10x + x2 = -24

The x term is 10x.  Take half its coefficient (5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
10x + 25 + x2 = -24 + 25

Reorder the terms:
25 + 10x + x2 = -24 + 25

Combine like terms: -24 + 25 = 1
25 + 10x + x2 = 1

Factor a perfect square on the left side:
(x + 5)(x + 5) = 1

Calculate the square root of the right side: 1

Break this problem into two subproblems by setting 
(x + 5) equal to 1 and -1.

Subproblem 1

x + 5 = 1 Simplifying x + 5 = 1 Reorder the terms: 5 + x = 1 Solving 5 + x = 1 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = 1 + -5 Combine like terms: 5 + -5 = 0 0 + x = 1 + -5 x = 1 + -5 Combine like terms: 1 + -5 = -4 x = -4 Simplifying x = -4

Subproblem 2

x + 5 = -1 Simplifying x + 5 = -1 Reorder the terms: 5 + x = -1 Solving 5 + x = -1 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + x = -1 + -5 Combine like terms: 5 + -5 = 0 0 + x = -1 + -5 x = -1 + -5 Combine like terms: -1 + -5 = -6 x = -6 Simplifying x = -6

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-4, -6}

See similar equations:

| 0=-4x^2+6x+5 | | 16x^2+4x-2= | | 72x+67=90x+34 | | 0=.5x^2+12 | | 0.5(8x+12)=6x | | factorm^8n^2-n^18-m^8+n^16=0 | | 62x+21=32x+23 | | log(3)(5x-1)=1 | | 92x+42=26x+18 | | x+2.35=9.78+x+7.22 | | 25x+17=14x+3 | | 6+5x-6x=-2 | | 24x^2+92x+80= | | 15x+6=12x+4 | | 3cos^2x+5sinx=4 | | 3x^2-29x-7=0 | | 1.5(x+8)=7.2+.9x | | 9.75-18=5.25 | | 4n^2-24n= | | 2.5x-15=12.5 | | q+-4=12 | | B+2.35=9.78+b+7.22 | | -10x-16y=-18 | | 4x^2-20x+21= | | 2x-10+x-40=180 | | x^2+42=70 | | 5-3x=-8x+5 | | 0=-x^2+13x-36 | | 2x-(x+1)=-2x+21 | | 6a^2-31a+28= | | h(h-1)/2h | | (4/5)*(1/6)= |

Equations solver categories