125(a)=.01a^2+.05a+107

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Solution for 125(a)=.01a^2+.05a+107 equation:


Simplifying
125(a) = 0.01a2 + 0.05a + 107

Reorder the terms:
125a = 107 + 0.05a + 0.01a2

Solving
125a = 107 + 0.05a + 0.01a2

Solving for variable 'a'.

Reorder the terms:
-107 + 125a + -0.05a + -0.01a2 = 107 + 0.05a + 0.01a2 + -107 + -0.05a + -0.01a2

Combine like terms: 125a + -0.05a = 124.95a
-107 + 124.95a + -0.01a2 = 107 + 0.05a + 0.01a2 + -107 + -0.05a + -0.01a2

Reorder the terms:
-107 + 124.95a + -0.01a2 = 107 + -107 + 0.05a + -0.05a + 0.01a2 + -0.01a2

Combine like terms: 107 + -107 = 0
-107 + 124.95a + -0.01a2 = 0 + 0.05a + -0.05a + 0.01a2 + -0.01a2
-107 + 124.95a + -0.01a2 = 0.05a + -0.05a + 0.01a2 + -0.01a2

Combine like terms: 0.05a + -0.05a = 0.00
-107 + 124.95a + -0.01a2 = 0.00 + 0.01a2 + -0.01a2
-107 + 124.95a + -0.01a2 = 0.01a2 + -0.01a2

Combine like terms: 0.01a2 + -0.01a2 = 0.00
-107 + 124.95a + -0.01a2 = 0.00

Begin completing the square.  Divide all terms by
-0.01 the coefficient of the squared term: 

Divide each side by '-0.01'.
10700 + -12495a + a2 = 0

Move the constant term to the right:

Add '-10700' to each side of the equation.
10700 + -12495a + -10700 + a2 = 0 + -10700

Reorder the terms:
10700 + -10700 + -12495a + a2 = 0 + -10700

Combine like terms: 10700 + -10700 = 0
0 + -12495a + a2 = 0 + -10700
-12495a + a2 = 0 + -10700

Combine like terms: 0 + -10700 = -10700
-12495a + a2 = -10700

The a term is -12495a.  Take half its coefficient (-6247.5).
Square it (39031256.25) and add it to both sides.

Add '39031256.25' to each side of the equation.
-12495a + 39031256.25 + a2 = -10700 + 39031256.25

Reorder the terms:
39031256.25 + -12495a + a2 = -10700 + 39031256.25

Combine like terms: -10700 + 39031256.25 = 39020556.25
39031256.25 + -12495a + a2 = 39020556.25

Factor a perfect square on the left side:
(a + -6247.5)(a + -6247.5) = 39020556.25

Calculate the square root of the right side: 6246.643598766

Break this problem into two subproblems by setting 
(a + -6247.5) equal to 6246.643598766 and -6246.643598766.

Subproblem 1

a + -6247.5 = 6246.643598766 Simplifying a + -6247.5 = 6246.643598766 Reorder the terms: -6247.5 + a = 6246.643598766 Solving -6247.5 + a = 6246.643598766 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '6247.5' to each side of the equation. -6247.5 + 6247.5 + a = 6246.643598766 + 6247.5 Combine like terms: -6247.5 + 6247.5 = 0.0 0.0 + a = 6246.643598766 + 6247.5 a = 6246.643598766 + 6247.5 Combine like terms: 6246.643598766 + 6247.5 = 12494.143598766 a = 12494.143598766 Simplifying a = 12494.143598766

Subproblem 2

a + -6247.5 = -6246.643598766 Simplifying a + -6247.5 = -6246.643598766 Reorder the terms: -6247.5 + a = -6246.643598766 Solving -6247.5 + a = -6246.643598766 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '6247.5' to each side of the equation. -6247.5 + 6247.5 + a = -6246.643598766 + 6247.5 Combine like terms: -6247.5 + 6247.5 = 0.0 0.0 + a = -6246.643598766 + 6247.5 a = -6246.643598766 + 6247.5 Combine like terms: -6246.643598766 + 6247.5 = 0.856401234 a = 0.856401234 Simplifying a = 0.856401234

Solution

The solution to the problem is based on the solutions from the subproblems. a = {12494.143598766, 0.856401234}

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