a^2-25a+2=0

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Solution for a^2-25a+2=0 equation:


Simplifying
a2 + -25a + 2 = 0

Reorder the terms:
2 + -25a + a2 = 0

Solving
2 + -25a + a2 = 0

Solving for variable 'a'.

Begin completing the square.

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + -25a + -2 + a2 = 0 + -2

Reorder the terms:
2 + -2 + -25a + a2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -25a + a2 = 0 + -2
-25a + a2 = 0 + -2

Combine like terms: 0 + -2 = -2
-25a + a2 = -2

The a term is -25a.  Take half its coefficient (-12.5).
Square it (156.25) and add it to both sides.

Add '156.25' to each side of the equation.
-25a + 156.25 + a2 = -2 + 156.25

Reorder the terms:
156.25 + -25a + a2 = -2 + 156.25

Combine like terms: -2 + 156.25 = 154.25
156.25 + -25a + a2 = 154.25

Factor a perfect square on the left side:
(a + -12.5)(a + -12.5) = 154.25

Calculate the square root of the right side: 12.419742348

Break this problem into two subproblems by setting 
(a + -12.5) equal to 12.419742348 and -12.419742348.

Subproblem 1

a + -12.5 = 12.419742348 Simplifying a + -12.5 = 12.419742348 Reorder the terms: -12.5 + a = 12.419742348 Solving -12.5 + a = 12.419742348 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '12.5' to each side of the equation. -12.5 + 12.5 + a = 12.419742348 + 12.5 Combine like terms: -12.5 + 12.5 = 0.0 0.0 + a = 12.419742348 + 12.5 a = 12.419742348 + 12.5 Combine like terms: 12.419742348 + 12.5 = 24.919742348 a = 24.919742348 Simplifying a = 24.919742348

Subproblem 2

a + -12.5 = -12.419742348 Simplifying a + -12.5 = -12.419742348 Reorder the terms: -12.5 + a = -12.419742348 Solving -12.5 + a = -12.419742348 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '12.5' to each side of the equation. -12.5 + 12.5 + a = -12.419742348 + 12.5 Combine like terms: -12.5 + 12.5 = 0.0 0.0 + a = -12.419742348 + 12.5 a = -12.419742348 + 12.5 Combine like terms: -12.419742348 + 12.5 = 0.080257652 a = 0.080257652 Simplifying a = 0.080257652

Solution

The solution to the problem is based on the solutions from the subproblems. a = {24.919742348, 0.080257652}

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