a^2-10a+5=

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Solution for a^2-10a+5= equation:


Simplifying
a2 + -10a + 5 = 0

Reorder the terms:
5 + -10a + a2 = 0

Solving
5 + -10a + a2 = 0

Solving for variable 'a'.

Begin completing the square.

Move the constant term to the right:

Add '-5' to each side of the equation.
5 + -10a + -5 + a2 = 0 + -5

Reorder the terms:
5 + -5 + -10a + a2 = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -10a + a2 = 0 + -5
-10a + a2 = 0 + -5

Combine like terms: 0 + -5 = -5
-10a + a2 = -5

The a term is -10a.  Take half its coefficient (-5).
Square it (25) and add it to both sides.

Add '25' to each side of the equation.
-10a + 25 + a2 = -5 + 25

Reorder the terms:
25 + -10a + a2 = -5 + 25

Combine like terms: -5 + 25 = 20
25 + -10a + a2 = 20

Factor a perfect square on the left side:
(a + -5)(a + -5) = 20

Calculate the square root of the right side: 4.472135955

Break this problem into two subproblems by setting 
(a + -5) equal to 4.472135955 and -4.472135955.

Subproblem 1

a + -5 = 4.472135955 Simplifying a + -5 = 4.472135955 Reorder the terms: -5 + a = 4.472135955 Solving -5 + a = 4.472135955 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + a = 4.472135955 + 5 Combine like terms: -5 + 5 = 0 0 + a = 4.472135955 + 5 a = 4.472135955 + 5 Combine like terms: 4.472135955 + 5 = 9.472135955 a = 9.472135955 Simplifying a = 9.472135955

Subproblem 2

a + -5 = -4.472135955 Simplifying a + -5 = -4.472135955 Reorder the terms: -5 + a = -4.472135955 Solving -5 + a = -4.472135955 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '5' to each side of the equation. -5 + 5 + a = -4.472135955 + 5 Combine like terms: -5 + 5 = 0 0 + a = -4.472135955 + 5 a = -4.472135955 + 5 Combine like terms: -4.472135955 + 5 = 0.527864045 a = 0.527864045 Simplifying a = 0.527864045

Solution

The solution to the problem is based on the solutions from the subproblems. a = {9.472135955, 0.527864045}

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