8x^2-16x+5=0

Simple and best practice solution for 8x^2-16x+5=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 8x^2-16x+5=0 equation:


Simplifying
8x2 + -16x + 5 = 0

Reorder the terms:
5 + -16x + 8x2 = 0

Solving
5 + -16x + 8x2 = 0

Solving for variable 'x'.

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

Divide each side by '8'.
0.625 + -2x + x2 = 0

Move the constant term to the right:

Add '-0.625' to each side of the equation.
0.625 + -2x + -0.625 + x2 = 0 + -0.625

Reorder the terms:
0.625 + -0.625 + -2x + x2 = 0 + -0.625

Combine like terms: 0.625 + -0.625 = 0.000
0.000 + -2x + x2 = 0 + -0.625
-2x + x2 = 0 + -0.625

Combine like terms: 0 + -0.625 = -0.625
-2x + x2 = -0.625

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = -0.625 + 1

Reorder the terms:
1 + -2x + x2 = -0.625 + 1

Combine like terms: -0.625 + 1 = 0.375
1 + -2x + x2 = 0.375

Factor a perfect square on the left side:
(x + -1)(x + -1) = 0.375

Calculate the square root of the right side: 0.612372436

Break this problem into two subproblems by setting 
(x + -1) equal to 0.612372436 and -0.612372436.

Subproblem 1

x + -1 = 0.612372436 Simplifying x + -1 = 0.612372436 Reorder the terms: -1 + x = 0.612372436 Solving -1 + x = 0.612372436 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = 0.612372436 + 1 Combine like terms: -1 + 1 = 0 0 + x = 0.612372436 + 1 x = 0.612372436 + 1 Combine like terms: 0.612372436 + 1 = 1.612372436 x = 1.612372436 Simplifying x = 1.612372436

Subproblem 2

x + -1 = -0.612372436 Simplifying x + -1 = -0.612372436 Reorder the terms: -1 + x = -0.612372436 Solving -1 + x = -0.612372436 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1' to each side of the equation. -1 + 1 + x = -0.612372436 + 1 Combine like terms: -1 + 1 = 0 0 + x = -0.612372436 + 1 x = -0.612372436 + 1 Combine like terms: -0.612372436 + 1 = 0.387627564 x = 0.387627564 Simplifying x = 0.387627564

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.612372436, 0.387627564}

See similar equations:

| 163-x+101-x=126 | | 20x-5x^2=0 | | 12z+5=3z+41 | | 3b+4=b+8 | | 9(5h+5)=495 | | x(163+101)=126 | | .878=.5*9.8*t^2 | | -2+4=-3+11x | | 9z-40=3z-10 | | x-64=126 | | x+64=126 | | -7*0=-2+-7x | | 8z-3=2z+21 | | x-138=126 | | x+138=126 | | 5x+7=-33-5x | | x(138-x)=126 | | 5+8p=83 | | x+25=163 | | x-37=101 | | 4000=60000/t-11 | | x(-37)=101 | | x-37=126 | | x+25=126 | | 14x-2(-2+-7x)=4 | | x(64+x)=126 | | 2.5+14y=-3.1 | | 64-x=126 | | 3x+8=32-2x | | 62+x=126 | | 25+x+37-x=126 | | 61=-26y+22 |

Equations solver categories