28x^2-12x+1=0

Simple and best practice solution for 28x^2-12x+1=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 28x^2-12x+1=0 equation:


Simplifying
28x2 + -12x + 1 = 0

Reorder the terms:
1 + -12x + 28x2 = 0

Solving
1 + -12x + 28x2 = 0

Solving for variable 'x'.

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

Divide each side by '28'.
0.03571428571 + -0.4285714286x + x2 = 0

Move the constant term to the right:

Add '-0.03571428571' to each side of the equation.
0.03571428571 + -0.4285714286x + -0.03571428571 + x2 = 0 + -0.03571428571

Reorder the terms:
0.03571428571 + -0.03571428571 + -0.4285714286x + x2 = 0 + -0.03571428571

Combine like terms: 0.03571428571 + -0.03571428571 = 0.00000000000
0.00000000000 + -0.4285714286x + x2 = 0 + -0.03571428571
-0.4285714286x + x2 = 0 + -0.03571428571

Combine like terms: 0 + -0.03571428571 = -0.03571428571
-0.4285714286x + x2 = -0.03571428571

The x term is -0.4285714286x.  Take half its coefficient (-0.2142857143).
Square it (0.04591836735) and add it to both sides.

Add '0.04591836735' to each side of the equation.
-0.4285714286x + 0.04591836735 + x2 = -0.03571428571 + 0.04591836735

Reorder the terms:
0.04591836735 + -0.4285714286x + x2 = -0.03571428571 + 0.04591836735

Combine like terms: -0.03571428571 + 0.04591836735 = 0.01020408164
0.04591836735 + -0.4285714286x + x2 = 0.01020408164

Factor a perfect square on the left side:
(x + -0.2142857143)(x + -0.2142857143) = 0.01020408164

Calculate the square root of the right side: 0.101015254

Break this problem into two subproblems by setting 
(x + -0.2142857143) equal to 0.101015254 and -0.101015254.

Subproblem 1

x + -0.2142857143 = 0.101015254 Simplifying x + -0.2142857143 = 0.101015254 Reorder the terms: -0.2142857143 + x = 0.101015254 Solving -0.2142857143 + x = 0.101015254 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2142857143' to each side of the equation. -0.2142857143 + 0.2142857143 + x = 0.101015254 + 0.2142857143 Combine like terms: -0.2142857143 + 0.2142857143 = 0.0000000000 0.0000000000 + x = 0.101015254 + 0.2142857143 x = 0.101015254 + 0.2142857143 Combine like terms: 0.101015254 + 0.2142857143 = 0.3153009683 x = 0.3153009683 Simplifying x = 0.3153009683

Subproblem 2

x + -0.2142857143 = -0.101015254 Simplifying x + -0.2142857143 = -0.101015254 Reorder the terms: -0.2142857143 + x = -0.101015254 Solving -0.2142857143 + x = -0.101015254 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.2142857143' to each side of the equation. -0.2142857143 + 0.2142857143 + x = -0.101015254 + 0.2142857143 Combine like terms: -0.2142857143 + 0.2142857143 = 0.0000000000 0.0000000000 + x = -0.101015254 + 0.2142857143 x = -0.101015254 + 0.2142857143 Combine like terms: -0.101015254 + 0.2142857143 = 0.1132704603 x = 0.1132704603 Simplifying x = 0.1132704603

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.3153009683, 0.1132704603}

See similar equations:

| 2x-4x=g-10x | | 8(w+2)-(-2w-6)=9w | | 3a-3a+5a-4a=16 | | 25x-4=71 | | x^4-12x+8=0 | | 4(2x-3)-4=2(3x+15)+6 | | 5(9x^2-4)=0 | | 2x+5=15-3 | | .08x+(.08*(4x+182))=500.38 | | -6x-7x+4x+3x=-16 | | 7=(0.04)(175)+b | | 4b+89=5 | | (7x-15)=8x | | sqrt(5x+9)-7=0 | | (3x-15)=(6x-3) | | -2x+1=2(3x+1)-1 | | 9w-126=45 | | 1.33[9x-6]=12 | | 3(4m+5)+7m= | | 3D-6=2d-1 | | (x+4)(x+4)=-24 | | f(x)=x^4-16x^3+64x^2 | | -48=2x-54 | | 9c-2c-5c=20 | | 2a+4=5a-5 | | 4.6w+0.19=39 | | 1.33+9x-6=12 | | 7b+3b-9b=20 | | x^2+12x+y^2-14y-204=0 | | 6x-15=3x+9 | | 40-2x=14-9x | | x^2+12x+y^2+14y-204=0 |

Equations solver categories