-.5x^2-12.5x+225=0

Simple and best practice solution for -.5x^2-12.5x+225=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 -.5x^2-12.5x+225=0 equation:


Simplifying
-0.5x2 + -12.5x + 225 = 0

Reorder the terms:
225 + -12.5x + -0.5x2 = 0

Solving
225 + -12.5x + -0.5x2 = 0

Solving for variable 'x'.

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

Divide each side by '-0.5'.
-450 + 25x + x2 = 0

Move the constant term to the right:

Add '450' to each side of the equation.
-450 + 25x + 450 + x2 = 0 + 450

Reorder the terms:
-450 + 450 + 25x + x2 = 0 + 450

Combine like terms: -450 + 450 = 0
0 + 25x + x2 = 0 + 450
25x + x2 = 0 + 450

Combine like terms: 0 + 450 = 450
25x + x2 = 450

The x term is 25x.  Take half its coefficient (12.5).
Square it (156.25) and add it to both sides.

Add '156.25' to each side of the equation.
25x + 156.25 + x2 = 450 + 156.25

Reorder the terms:
156.25 + 25x + x2 = 450 + 156.25

Combine like terms: 450 + 156.25 = 606.25
156.25 + 25x + x2 = 606.25

Factor a perfect square on the left side:
(x + 12.5)(x + 12.5) = 606.25

Calculate the square root of the right side: 24.622144504

Break this problem into two subproblems by setting 
(x + 12.5) equal to 24.622144504 and -24.622144504.

Subproblem 1

x + 12.5 = 24.622144504 Simplifying x + 12.5 = 24.622144504 Reorder the terms: 12.5 + x = 24.622144504 Solving 12.5 + x = 24.622144504 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12.5' to each side of the equation. 12.5 + -12.5 + x = 24.622144504 + -12.5 Combine like terms: 12.5 + -12.5 = 0.0 0.0 + x = 24.622144504 + -12.5 x = 24.622144504 + -12.5 Combine like terms: 24.622144504 + -12.5 = 12.122144504 x = 12.122144504 Simplifying x = 12.122144504

Subproblem 2

x + 12.5 = -24.622144504 Simplifying x + 12.5 = -24.622144504 Reorder the terms: 12.5 + x = -24.622144504 Solving 12.5 + x = -24.622144504 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-12.5' to each side of the equation. 12.5 + -12.5 + x = -24.622144504 + -12.5 Combine like terms: 12.5 + -12.5 = 0.0 0.0 + x = -24.622144504 + -12.5 x = -24.622144504 + -12.5 Combine like terms: -24.622144504 + -12.5 = -37.122144504 x = -37.122144504 Simplifying x = -37.122144504

Solution

The solution to the problem is based on the solutions from the subproblems. x = {12.122144504, -37.122144504}

See similar equations:

| (23-2x)(30-2x)=330 | | x+5/6=59/6 | | x/10-8=9/20 | | X/2-X+4/7 | | 4x+5/6=59/6 | | -.5x=12.5x+225 | | 287=176-w | | -3c-12=-5+12 | | y/4+3=-17 | | -5.6-(-15)= | | 30+8q=2 | | 30+8q+2= | | 3.5+0.25x=15 | | 8-7+4*3=s | | (8+x)-4=-6 | | 2(1.333333333)+y=1 | | (x+6)=-6 | | 5x+3/7=178/7 | | 61-u=229 | | 5x+3/7 | | 5-9k+1+k-14-2k= | | 7+2m=4 | | 8x+3=6x-5 | | 6+8x=36-2a | | 1/2x-2x/3=6/x | | 70/8 | | 1/5y+4/5y=5 | | n/8+19=3 | | N=2.5 | | -17.5-(5.6)= | | 2.7t-4=4.1 | | 5x=8x-2 |

Equations solver categories