4z-1=25z^2-14z+2

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Solution for 4z-1=25z^2-14z+2 equation:


Simplifying
4z + -1 = 25z2 + -14z + 2

Reorder the terms:
-1 + 4z = 25z2 + -14z + 2

Reorder the terms:
-1 + 4z = 2 + -14z + 25z2

Solving
-1 + 4z = 2 + -14z + 25z2

Solving for variable 'z'.

Reorder the terms:
-1 + -2 + 4z + 14z + -25z2 = 2 + -14z + 25z2 + -2 + 14z + -25z2

Combine like terms: -1 + -2 = -3
-3 + 4z + 14z + -25z2 = 2 + -14z + 25z2 + -2 + 14z + -25z2

Combine like terms: 4z + 14z = 18z
-3 + 18z + -25z2 = 2 + -14z + 25z2 + -2 + 14z + -25z2

Reorder the terms:
-3 + 18z + -25z2 = 2 + -2 + -14z + 14z + 25z2 + -25z2

Combine like terms: 2 + -2 = 0
-3 + 18z + -25z2 = 0 + -14z + 14z + 25z2 + -25z2
-3 + 18z + -25z2 = -14z + 14z + 25z2 + -25z2

Combine like terms: -14z + 14z = 0
-3 + 18z + -25z2 = 0 + 25z2 + -25z2
-3 + 18z + -25z2 = 25z2 + -25z2

Combine like terms: 25z2 + -25z2 = 0
-3 + 18z + -25z2 = 0

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

Divide each side by '-25'.
0.12 + -0.72z + z2 = 0

Move the constant term to the right:

Add '-0.12' to each side of the equation.
0.12 + -0.72z + -0.12 + z2 = 0 + -0.12

Reorder the terms:
0.12 + -0.12 + -0.72z + z2 = 0 + -0.12

Combine like terms: 0.12 + -0.12 = 0.00
0.00 + -0.72z + z2 = 0 + -0.12
-0.72z + z2 = 0 + -0.12

Combine like terms: 0 + -0.12 = -0.12
-0.72z + z2 = -0.12

The z term is -0.72z.  Take half its coefficient (-0.36).
Square it (0.1296) and add it to both sides.

Add '0.1296' to each side of the equation.
-0.72z + 0.1296 + z2 = -0.12 + 0.1296

Reorder the terms:
0.1296 + -0.72z + z2 = -0.12 + 0.1296

Combine like terms: -0.12 + 0.1296 = 0.0096
0.1296 + -0.72z + z2 = 0.0096

Factor a perfect square on the left side:
(z + -0.36)(z + -0.36) = 0.0096

Calculate the square root of the right side: 0.09797959

Break this problem into two subproblems by setting 
(z + -0.36) equal to 0.09797959 and -0.09797959.

Subproblem 1

z + -0.36 = 0.09797959 Simplifying z + -0.36 = 0.09797959 Reorder the terms: -0.36 + z = 0.09797959 Solving -0.36 + z = 0.09797959 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '0.36' to each side of the equation. -0.36 + 0.36 + z = 0.09797959 + 0.36 Combine like terms: -0.36 + 0.36 = 0.00 0.00 + z = 0.09797959 + 0.36 z = 0.09797959 + 0.36 Combine like terms: 0.09797959 + 0.36 = 0.45797959 z = 0.45797959 Simplifying z = 0.45797959

Subproblem 2

z + -0.36 = -0.09797959 Simplifying z + -0.36 = -0.09797959 Reorder the terms: -0.36 + z = -0.09797959 Solving -0.36 + z = -0.09797959 Solving for variable 'z'. Move all terms containing z to the left, all other terms to the right. Add '0.36' to each side of the equation. -0.36 + 0.36 + z = -0.09797959 + 0.36 Combine like terms: -0.36 + 0.36 = 0.00 0.00 + z = -0.09797959 + 0.36 z = -0.09797959 + 0.36 Combine like terms: -0.09797959 + 0.36 = 0.26202041 z = 0.26202041 Simplifying z = 0.26202041

Solution

The solution to the problem is based on the solutions from the subproblems. z = {0.45797959, 0.26202041}

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