a^2+4-(-5)=a+73-7

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Solution for a^2+4-(-5)=a+73-7 equation:


Simplifying
a2 + 4 + -1(-5) = a + 73 + -7

Multiply -1 * -5
a2 + 4 + 5 = a + 73 + -7

Reorder the terms:
4 + 5 + a2 = a + 73 + -7

Combine like terms: 4 + 5 = 9
9 + a2 = a + 73 + -7

Reorder the terms:
9 + a2 = 73 + -7 + a

Combine like terms: 73 + -7 = 66
9 + a2 = 66 + a

Solving
9 + a2 = 66 + a

Solving for variable 'a'.

Reorder the terms:
9 + -66 + -1a + a2 = 66 + a + -66 + -1a

Combine like terms: 9 + -66 = -57
-57 + -1a + a2 = 66 + a + -66 + -1a

Reorder the terms:
-57 + -1a + a2 = 66 + -66 + a + -1a

Combine like terms: 66 + -66 = 0
-57 + -1a + a2 = 0 + a + -1a
-57 + -1a + a2 = a + -1a

Combine like terms: a + -1a = 0
-57 + -1a + a2 = 0

Begin completing the square.

Move the constant term to the right:

Add '57' to each side of the equation.
-57 + -1a + 57 + a2 = 0 + 57

Reorder the terms:
-57 + 57 + -1a + a2 = 0 + 57

Combine like terms: -57 + 57 = 0
0 + -1a + a2 = 0 + 57
-1a + a2 = 0 + 57

Combine like terms: 0 + 57 = 57
-1a + a2 = 57

The a term is -1a.  Take half its coefficient (-0.5).
Square it (0.25) and add it to both sides.

Add '0.25' to each side of the equation.
-1a + 0.25 + a2 = 57 + 0.25

Reorder the terms:
0.25 + -1a + a2 = 57 + 0.25

Combine like terms: 57 + 0.25 = 57.25
0.25 + -1a + a2 = 57.25

Factor a perfect square on the left side:
(a + -0.5)(a + -0.5) = 57.25

Calculate the square root of the right side: 7.566372975

Break this problem into two subproblems by setting 
(a + -0.5) equal to 7.566372975 and -7.566372975.

Subproblem 1

a + -0.5 = 7.566372975 Simplifying a + -0.5 = 7.566372975 Reorder the terms: -0.5 + a = 7.566372975 Solving -0.5 + a = 7.566372975 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + a = 7.566372975 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + a = 7.566372975 + 0.5 a = 7.566372975 + 0.5 Combine like terms: 7.566372975 + 0.5 = 8.066372975 a = 8.066372975 Simplifying a = 8.066372975

Subproblem 2

a + -0.5 = -7.566372975 Simplifying a + -0.5 = -7.566372975 Reorder the terms: -0.5 + a = -7.566372975 Solving -0.5 + a = -7.566372975 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '0.5' to each side of the equation. -0.5 + 0.5 + a = -7.566372975 + 0.5 Combine like terms: -0.5 + 0.5 = 0.0 0.0 + a = -7.566372975 + 0.5 a = -7.566372975 + 0.5 Combine like terms: -7.566372975 + 0.5 = -7.066372975 a = -7.066372975 Simplifying a = -7.066372975

Solution

The solution to the problem is based on the solutions from the subproblems. a = {8.066372975, -7.066372975}

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