x^2-1.8x+0.155=0

Simple and best practice solution for x^2-1.8x+0.155=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^2-1.8x+0.155=0 equation:


Simplifying
x2 + -1.8x + 0.155 = 0

Reorder the terms:
0.155 + -1.8x + x2 = 0

Solving
0.155 + -1.8x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '-0.155' to each side of the equation.
0.155 + -1.8x + -0.155 + x2 = 0 + -0.155

Reorder the terms:
0.155 + -0.155 + -1.8x + x2 = 0 + -0.155

Combine like terms: 0.155 + -0.155 = 0.000
0.000 + -1.8x + x2 = 0 + -0.155
-1.8x + x2 = 0 + -0.155

Combine like terms: 0 + -0.155 = -0.155
-1.8x + x2 = -0.155

The x term is -1.8x.  Take half its coefficient (-0.9).
Square it (0.81) and add it to both sides.

Add '0.81' to each side of the equation.
-1.8x + 0.81 + x2 = -0.155 + 0.81

Reorder the terms:
0.81 + -1.8x + x2 = -0.155 + 0.81

Combine like terms: -0.155 + 0.81 = 0.655
0.81 + -1.8x + x2 = 0.655

Factor a perfect square on the left side:
(x + -0.9)(x + -0.9) = 0.655

Calculate the square root of the right side: 0.809320703

Break this problem into two subproblems by setting 
(x + -0.9) equal to 0.809320703 and -0.809320703.

Subproblem 1

x + -0.9 = 0.809320703 Simplifying x + -0.9 = 0.809320703 Reorder the terms: -0.9 + x = 0.809320703 Solving -0.9 + x = 0.809320703 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.9' to each side of the equation. -0.9 + 0.9 + x = 0.809320703 + 0.9 Combine like terms: -0.9 + 0.9 = 0.0 0.0 + x = 0.809320703 + 0.9 x = 0.809320703 + 0.9 Combine like terms: 0.809320703 + 0.9 = 1.709320703 x = 1.709320703 Simplifying x = 1.709320703

Subproblem 2

x + -0.9 = -0.809320703 Simplifying x + -0.9 = -0.809320703 Reorder the terms: -0.9 + x = -0.809320703 Solving -0.9 + x = -0.809320703 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.9' to each side of the equation. -0.9 + 0.9 + x = -0.809320703 + 0.9 Combine like terms: -0.9 + 0.9 = 0.0 0.0 + x = -0.809320703 + 0.9 x = -0.809320703 + 0.9 Combine like terms: -0.809320703 + 0.9 = 0.090679297 x = 0.090679297 Simplifying x = 0.090679297

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.709320703, 0.090679297}

See similar equations:

| 0.5x-3.5(x-2)=25 | | -5x-7=7x+7 | | 24x=300 | | 6x+2(x-20)=488 | | 3500-10P=-500+10P | | 29=3u-5u-27 | | -x+8=2x-4 | | (x)2+2(x)=48 | | 2u+-8u=-30 | | 6x-2x=6-10 | | 2[x+3x]=56 | | 6(4n+3)-12(5n+6)=-3n-6n | | 63=2x+9x-19 | | 2m/3=-8 | | 3500-10p=1000+10p | | 4xy-5x=-2 | | 5x/9=6x/7-19 | | x/2=x/3-4 | | x-(x*0.4)=4800 | | T(x)=x(50-2x) | | y-5y=-2/4x | | x/2=(x/3)-4 | | T(x)=x(50-2x)whatisT(5) | | X-0.2X=60000 | | 36-[5+7y-4(y+3)]=-5(2y-3)-[6(y-1)-8y+8] | | 12a^3c/4ax | | 9-3x+6x-8=0 | | G(165-h)=1/2^2 | | x+15=2x+27 | | -6+4x=3x | | (-7)-7= | | 3000-10P=-1000+10P |

Equations solver categories