64x^2-128x=25

Simple and best practice solution for 64x^2-128x=25 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 64x^2-128x=25 equation:


Simplifying
64x2 + -128x = 25

Reorder the terms:
-128x + 64x2 = 25

Solving
-128x + 64x2 = 25

Solving for variable 'x'.

Reorder the terms:
-25 + -128x + 64x2 = 25 + -25

Combine like terms: 25 + -25 = 0
-25 + -128x + 64x2 = 0

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

Divide each side by '64'.
-0.390625 + -2x + x2 = 0

Move the constant term to the right:

Add '0.390625' to each side of the equation.
-0.390625 + -2x + 0.390625 + x2 = 0 + 0.390625

Reorder the terms:
-0.390625 + 0.390625 + -2x + x2 = 0 + 0.390625

Combine like terms: -0.390625 + 0.390625 = 0.000000
0.000000 + -2x + x2 = 0 + 0.390625
-2x + x2 = 0 + 0.390625

Combine like terms: 0 + 0.390625 = 0.390625
-2x + x2 = 0.390625

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 = 0.390625 + 1

Reorder the terms:
1 + -2x + x2 = 0.390625 + 1

Combine like terms: 0.390625 + 1 = 1.390625
1 + -2x + x2 = 1.390625

Factor a perfect square on the left side:
(x + -1)(x + -1) = 1.390625

Calculate the square root of the right side: 1.179247642

Break this problem into two subproblems by setting 
(x + -1) equal to 1.179247642 and -1.179247642.

Subproblem 1

x + -1 = 1.179247642 Simplifying x + -1 = 1.179247642 Reorder the terms: -1 + x = 1.179247642 Solving -1 + x = 1.179247642 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 = 1.179247642 + 1 Combine like terms: -1 + 1 = 0 0 + x = 1.179247642 + 1 x = 1.179247642 + 1 Combine like terms: 1.179247642 + 1 = 2.179247642 x = 2.179247642 Simplifying x = 2.179247642

Subproblem 2

x + -1 = -1.179247642 Simplifying x + -1 = -1.179247642 Reorder the terms: -1 + x = -1.179247642 Solving -1 + x = -1.179247642 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 = -1.179247642 + 1 Combine like terms: -1 + 1 = 0 0 + x = -1.179247642 + 1 x = -1.179247642 + 1 Combine like terms: -1.179247642 + 1 = -0.179247642 x = -0.179247642 Simplifying x = -0.179247642

Solution

The solution to the problem is based on the solutions from the subproblems. x = {2.179247642, -0.179247642}

See similar equations:

| -5+6x=2x+35 | | 7+2x=6x+35 | | 99-6x=5-7x | | r/4=53 | | 6x-8=x+52 | | x+.12=15 | | 4a-6=6(a+2)+8 | | 7x-10=2+x | | 4a-6=6(a+2)8 | | 3x-4=56-2x | | 2x^2=2x-5 | | -7+6x-2x=13 | | 5F+13=38 | | -1/4(x+4)=4 | | 5(x-7)+11=2x-3(x+4) | | x+x*.2=42 | | -4+3x-x=20 | | 5(1-n)=35 | | 4+7x+3x=-6 | | 6x^2-9x=12 | | x+x*20=42 | | sin(7x)+sin(5x)=0 | | 6(x-2)-3x=2(2x+3)-2 | | x+x/20=42 | | -5(a+2)=2(2a-15)+a | | 7(2)-4= | | 12x^2(x/3+9x/x^2)=4x^3-72 | | -1-4y=-4 | | 12x^2(x/3+9x/y^2)=4y^3-72 | | 7(1)-4= | | 4(p-1)=5(p+1) | | 4(n-2)=3(n-3) |

Equations solver categories