x^2-0.8x+0.16=0

Simple and best practice solution for x^2-0.8x+0.16=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 x^2-0.8x+0.16=0 equation:


Simplifying
x2 + -0.8x + 0.16 = 0

Reorder the terms:
0.16 + -0.8x + x2 = 0

Solving
0.16 + -0.8x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-0.16' to each side of the equation.
0.16 + -0.8x + -0.16 + x2 = 0 + -0.16

Reorder the terms:
0.16 + -0.16 + -0.8x + x2 = 0 + -0.16

Combine like terms: 0.16 + -0.16 = 0.00
0.00 + -0.8x + x2 = 0 + -0.16
-0.8x + x2 = 0 + -0.16

Combine like terms: 0 + -0.16 = -0.16
-0.8x + x2 = -0.16

The x term is -0.8x.  Take half its coefficient (-0.4).
Square it (0.16) and add it to both sides.

Add '0.16' to each side of the equation.
-0.8x + 0.16 + x2 = -0.16 + 0.16

Reorder the terms:
0.16 + -0.8x + x2 = -0.16 + 0.16

Combine like terms: -0.16 + 0.16 = 0.00
0.16 + -0.8x + x2 = 0.00

Factor a perfect square on the left side:
(x + -0.4)(x + -0.4) = 0.00

Calculate the square root of the right side: 0.00

Break this problem into two subproblems by setting 
(x + -0.4) equal to 0.00 and 0.00.

Subproblem 1

x + -0.4 = 0.00 Simplifying x + -0.4 = 0.00 Reorder the terms: -0.4 + x = 0.00 Solving -0.4 + x = 0.00 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + x = 0.00 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + x = 0.00 + 0.4 x = 0.00 + 0.4 Combine like terms: 0.00 + 0.4 = 0.4 x = 0.4 Simplifying x = 0.4

Subproblem 2

x + -0.4 = 0.00 Simplifying x + -0.4 = 0.00 Reorder the terms: -0.4 + x = 0.00 Solving -0.4 + x = 0.00 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.4' to each side of the equation. -0.4 + 0.4 + x = 0.00 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + x = 0.00 + 0.4 x = 0.00 + 0.4 Combine like terms: 0.00 + 0.4 = 0.4 x = 0.4 Simplifying x = 0.4

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.4, 0.4}

See similar equations:

| 10+5x=10x-26 | | (x+3)+(3-3x)=0 | | 2x-4+x+1=180 | | 8n+12=2 | | 1/4×2/5 | | 4y+1=4x+8 | | -6x^2+19x+7=0 | | 4y+1=4x+1 | | 8x+72=2x+114 | | (4yx)+1=(17y)+8 | | 8x+72+2x+114=180 | | 4x+97=8x-11 | | y(4x)+1=(17*y)+8 | | 5x-5=12+2x | | 11x-39=6x+91 | | 5x+5=12+2x | | 2x-8+14x=4(6x-4)+6 | | 2x-11+2x=5(2x-3)+2 | | 2z/3=8 | | -72-2x=-10x+32 | | 10sin(2pi/3) | | 7/9s=2/3 | | 12y-30=6 | | -107-x=1x+146 | | 3b+5=10b-27 | | x+30.5+2x=122 | | 2x+x+21.5=116 | | 5p-7-2(p+1)=-(6p-3) | | 8x^3-16x^2-64x-2=0 | | 0.2(x+6)=0.167(x+8) | | 3x-7+x=20 | | -34=4x+2 |

Equations solver categories