a^2-14a+4=0

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Solution for a^2-14a+4=0 equation:


Simplifying
a2 + -14a + 4 = 0

Reorder the terms:
4 + -14a + a2 = 0

Solving
4 + -14a + a2 = 0

Solving for variable 'a'.

Begin completing the square.

Move the constant term to the right:

Add '-4' to each side of the equation.
4 + -14a + -4 + a2 = 0 + -4

Reorder the terms:
4 + -4 + -14a + a2 = 0 + -4

Combine like terms: 4 + -4 = 0
0 + -14a + a2 = 0 + -4
-14a + a2 = 0 + -4

Combine like terms: 0 + -4 = -4
-14a + a2 = -4

The a term is -14a.  Take half its coefficient (-7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
-14a + 49 + a2 = -4 + 49

Reorder the terms:
49 + -14a + a2 = -4 + 49

Combine like terms: -4 + 49 = 45
49 + -14a + a2 = 45

Factor a perfect square on the left side:
(a + -7)(a + -7) = 45

Calculate the square root of the right side: 6.708203933

Break this problem into two subproblems by setting 
(a + -7) equal to 6.708203933 and -6.708203933.

Subproblem 1

a + -7 = 6.708203933 Simplifying a + -7 = 6.708203933 Reorder the terms: -7 + a = 6.708203933 Solving -7 + a = 6.708203933 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + a = 6.708203933 + 7 Combine like terms: -7 + 7 = 0 0 + a = 6.708203933 + 7 a = 6.708203933 + 7 Combine like terms: 6.708203933 + 7 = 13.708203933 a = 13.708203933 Simplifying a = 13.708203933

Subproblem 2

a + -7 = -6.708203933 Simplifying a + -7 = -6.708203933 Reorder the terms: -7 + a = -6.708203933 Solving -7 + a = -6.708203933 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + a = -6.708203933 + 7 Combine like terms: -7 + 7 = 0 0 + a = -6.708203933 + 7 a = -6.708203933 + 7 Combine like terms: -6.708203933 + 7 = 0.291796067 a = 0.291796067 Simplifying a = 0.291796067

Solution

The solution to the problem is based on the solutions from the subproblems. a = {13.708203933, 0.291796067}

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