1-8a+a^2=0

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Solution for 1-8a+a^2=0 equation:


Simplifying
1 + -8a + a2 = 0

Solving
1 + -8a + a2 = 0

Solving for variable 'a'.

Begin completing the square.

Move the constant term to the right:

Add '-1' to each side of the equation.
1 + -8a + -1 + a2 = 0 + -1

Reorder the terms:
1 + -1 + -8a + a2 = 0 + -1

Combine like terms: 1 + -1 = 0
0 + -8a + a2 = 0 + -1
-8a + a2 = 0 + -1

Combine like terms: 0 + -1 = -1
-8a + a2 = -1

The a term is -8a.  Take half its coefficient (-4).
Square it (16) and add it to both sides.

Add '16' to each side of the equation.
-8a + 16 + a2 = -1 + 16

Reorder the terms:
16 + -8a + a2 = -1 + 16

Combine like terms: -1 + 16 = 15
16 + -8a + a2 = 15

Factor a perfect square on the left side:
(a + -4)(a + -4) = 15

Calculate the square root of the right side: 3.872983346

Break this problem into two subproblems by setting 
(a + -4) equal to 3.872983346 and -3.872983346.

Subproblem 1

a + -4 = 3.872983346 Simplifying a + -4 = 3.872983346 Reorder the terms: -4 + a = 3.872983346 Solving -4 + a = 3.872983346 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + a = 3.872983346 + 4 Combine like terms: -4 + 4 = 0 0 + a = 3.872983346 + 4 a = 3.872983346 + 4 Combine like terms: 3.872983346 + 4 = 7.872983346 a = 7.872983346 Simplifying a = 7.872983346

Subproblem 2

a + -4 = -3.872983346 Simplifying a + -4 = -3.872983346 Reorder the terms: -4 + a = -3.872983346 Solving -4 + a = -3.872983346 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '4' to each side of the equation. -4 + 4 + a = -3.872983346 + 4 Combine like terms: -4 + 4 = 0 0 + a = -3.872983346 + 4 a = -3.872983346 + 4 Combine like terms: -3.872983346 + 4 = 0.127016654 a = 0.127016654 Simplifying a = 0.127016654

Solution

The solution to the problem is based on the solutions from the subproblems. a = {7.872983346, 0.127016654}

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