56x^2-7x-1=0

Simple and best practice solution for 56x^2-7x-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 56x^2-7x-1=0 equation:


Simplifying
56x2 + -7x + -1 = 0

Reorder the terms:
-1 + -7x + 56x2 = 0

Solving
-1 + -7x + 56x2 = 0

Solving for variable 'x'.

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

Divide each side by '56'.
-0.01785714286 + -0.125x + x2 = 0

Move the constant term to the right:

Add '0.01785714286' to each side of the equation.
-0.01785714286 + -0.125x + 0.01785714286 + x2 = 0 + 0.01785714286

Reorder the terms:
-0.01785714286 + 0.01785714286 + -0.125x + x2 = 0 + 0.01785714286

Combine like terms: -0.01785714286 + 0.01785714286 = 0.00000000000
0.00000000000 + -0.125x + x2 = 0 + 0.01785714286
-0.125x + x2 = 0 + 0.01785714286

Combine like terms: 0 + 0.01785714286 = 0.01785714286
-0.125x + x2 = 0.01785714286

The x term is -0.125x.  Take half its coefficient (-0.0625).
Square it (0.00390625) and add it to both sides.

Add '0.00390625' to each side of the equation.
-0.125x + 0.00390625 + x2 = 0.01785714286 + 0.00390625

Reorder the terms:
0.00390625 + -0.125x + x2 = 0.01785714286 + 0.00390625

Combine like terms: 0.01785714286 + 0.00390625 = 0.02176339286
0.00390625 + -0.125x + x2 = 0.02176339286

Factor a perfect square on the left side:
(x + -0.0625)(x + -0.0625) = 0.02176339286

Calculate the square root of the right side: 0.147524211

Break this problem into two subproblems by setting 
(x + -0.0625) equal to 0.147524211 and -0.147524211.

Subproblem 1

x + -0.0625 = 0.147524211 Simplifying x + -0.0625 = 0.147524211 Reorder the terms: -0.0625 + x = 0.147524211 Solving -0.0625 + x = 0.147524211 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.0625' to each side of the equation. -0.0625 + 0.0625 + x = 0.147524211 + 0.0625 Combine like terms: -0.0625 + 0.0625 = 0.0000 0.0000 + x = 0.147524211 + 0.0625 x = 0.147524211 + 0.0625 Combine like terms: 0.147524211 + 0.0625 = 0.210024211 x = 0.210024211 Simplifying x = 0.210024211

Subproblem 2

x + -0.0625 = -0.147524211 Simplifying x + -0.0625 = -0.147524211 Reorder the terms: -0.0625 + x = -0.147524211 Solving -0.0625 + x = -0.147524211 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.0625' to each side of the equation. -0.0625 + 0.0625 + x = -0.147524211 + 0.0625 Combine like terms: -0.0625 + 0.0625 = 0.0000 0.0000 + x = -0.147524211 + 0.0625 x = -0.147524211 + 0.0625 Combine like terms: -0.147524211 + 0.0625 = -0.085024211 x = -0.085024211 Simplifying x = -0.085024211

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.210024211, -0.085024211}

See similar equations:

| 5/6b=1/ | | Cos45=6/x | | 1x+4x=1 | | 14x=7(2x+3) | | 5(y-1)+7(y+1)=83 | | 2x+11-5z=-10 | | -3x+3=6(x-4) | | (-2)(11-12x)=(-4)(1-6x) | | X^3+2x^2-3x-8= | | -6(2y-1)+5y=-50 | | 5y-12=13y+4 | | 11.7w=-13.97+10.6w | | 24=-8(4y+5) | | 2x+9+6x=1 | | -16.34-1.87+7.3t=9.1t+17.25 | | 7(x-3)=4x-39 | | X+(x+5)=14 | | 5n^2=245 | | (-4)(2+8h)=(-17) | | 3t^3=192t | | 11s=-0.21+10.9s | | 11s=-0.21+10.95 | | 10+5c=c | | 18=-5w+8(w+6) | | Y=r-x+8 | | -4+y+13=5y+21 | | -0.1z-13.97+16.1z=17.7z+3.88 | | x+20=4yvalue | | 8t^2+2t-6=0 | | q-20/-4=0 | | 2x(7+2)+(4+12)x(12-9)= | | y=20000+4x |

Equations solver categories