25x^2-20x=1

Simple and best practice solution for 25x^2-20x=1 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 25x^2-20x=1 equation:


Simplifying
25x2 + -20x = 1

Reorder the terms:
-20x + 25x2 = 1

Solving
-20x + 25x2 = 1

Solving for variable 'x'.

Reorder the terms:
-1 + -20x + 25x2 = 1 + -1

Combine like terms: 1 + -1 = 0
-1 + -20x + 25x2 = 0

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

Divide each side by '25'.
-0.04 + -0.8x + x2 = 0

Move the constant term to the right:

Add '0.04' to each side of the equation.
-0.04 + -0.8x + 0.04 + x2 = 0 + 0.04

Reorder the terms:
-0.04 + 0.04 + -0.8x + x2 = 0 + 0.04

Combine like terms: -0.04 + 0.04 = 0.00
0.00 + -0.8x + x2 = 0 + 0.04
-0.8x + x2 = 0 + 0.04

Combine like terms: 0 + 0.04 = 0.04
-0.8x + x2 = 0.04

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 = 0.04 + 0.16

Reorder the terms:
0.16 + -0.8x + x2 = 0.04 + 0.16

Combine like terms: 0.04 + 0.16 = 0.2
0.16 + -0.8x + x2 = 0.2

Factor a perfect square on the left side:
(x + -0.4)(x + -0.4) = 0.2

Calculate the square root of the right side: 0.447213596

Break this problem into two subproblems by setting 
(x + -0.4) equal to 0.447213596 and -0.447213596.

Subproblem 1

x + -0.4 = 0.447213596 Simplifying x + -0.4 = 0.447213596 Reorder the terms: -0.4 + x = 0.447213596 Solving -0.4 + x = 0.447213596 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 = 0.447213596 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + x = 0.447213596 + 0.4 x = 0.447213596 + 0.4 Combine like terms: 0.447213596 + 0.4 = 0.847213596 x = 0.847213596 Simplifying x = 0.847213596

Subproblem 2

x + -0.4 = -0.447213596 Simplifying x + -0.4 = -0.447213596 Reorder the terms: -0.4 + x = -0.447213596 Solving -0.4 + x = -0.447213596 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 = -0.447213596 + 0.4 Combine like terms: -0.4 + 0.4 = 0.0 0.0 + x = -0.447213596 + 0.4 x = -0.447213596 + 0.4 Combine like terms: -0.447213596 + 0.4 = -0.047213596 x = -0.047213596 Simplifying x = -0.047213596

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.847213596, -0.047213596}

See similar equations:

| 4(x+2)=2x+38 | | A+a+b+b=45 | | 3(x-2)+5=4(x-1) | | -8x^3-2x^2-43x+30=0 | | 2a+2b=45 | | X^2-10X+3=-6-4X | | 2s+2f=45 | | 5x+y=-7 | | 420=2(4w)+2w | | 4x^2-40x=-91 | | 5x(7x-3x)=16x+15 | | lx+2l=5 | | a-43=17 | | x+x+4=118 | | 3xy+xy-4x+x=18 | | u/6=-25 | | 12x+7x=34 | | f-5=-39 | | x^2-12x+27= | | x^2+10x+31= | | y-1=3(x-(-3)) | | y-1=-3(x-(-3)) | | 10*x^2-3*x-1=0 | | p/5=-3 | | 6x^2-25x=0 | | 5(c-3)+4=2+c-13 | | 0=2x^2-3x-6 | | d/(-13)=-13 | | 5(c+-3)+4=2+c-13 | | 3(x+5y)-2(x^2-4y^2)= | | e+(-8)=-29 | | 5=10+x |

Equations solver categories