(-a^2-5a+3)-(a^2+3a-2)=

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Solution for (-a^2-5a+3)-(a^2+3a-2)= equation:


Simplifying
(-1a2 + -5a + 3) + -1(a2 + 3a + -2) = 0

Reorder the terms:
(3 + -5a + -1a2) + -1(a2 + 3a + -2) = 0

Remove parenthesis around (3 + -5a + -1a2)
3 + -5a + -1a2 + -1(a2 + 3a + -2) = 0

Reorder the terms:
3 + -5a + -1a2 + -1(-2 + 3a + a2) = 0
3 + -5a + -1a2 + (-2 * -1 + 3a * -1 + a2 * -1) = 0
3 + -5a + -1a2 + (2 + -3a + -1a2) = 0

Reorder the terms:
3 + 2 + -5a + -3a + -1a2 + -1a2 = 0

Combine like terms: 3 + 2 = 5
5 + -5a + -3a + -1a2 + -1a2 = 0

Combine like terms: -5a + -3a = -8a
5 + -8a + -1a2 + -1a2 = 0

Combine like terms: -1a2 + -1a2 = -2a2
5 + -8a + -2a2 = 0

Solving
5 + -8a + -2a2 = 0

Solving for variable 'a'.

Begin completing the square.  Divide all terms by
-2 the coefficient of the squared term: 

Divide each side by '-2'.
-2.5 + 4a + a2 = 0

Move the constant term to the right:

Add '2.5' to each side of the equation.
-2.5 + 4a + 2.5 + a2 = 0 + 2.5

Reorder the terms:
-2.5 + 2.5 + 4a + a2 = 0 + 2.5

Combine like terms: -2.5 + 2.5 = 0.0
0.0 + 4a + a2 = 0 + 2.5
4a + a2 = 0 + 2.5

Combine like terms: 0 + 2.5 = 2.5
4a + a2 = 2.5

The a term is 4a.  Take half its coefficient (2).
Square it (4) and add it to both sides.

Add '4' to each side of the equation.
4a + 4 + a2 = 2.5 + 4

Reorder the terms:
4 + 4a + a2 = 2.5 + 4

Combine like terms: 2.5 + 4 = 6.5
4 + 4a + a2 = 6.5

Factor a perfect square on the left side:
(a + 2)(a + 2) = 6.5

Calculate the square root of the right side: 2.549509757

Break this problem into two subproblems by setting 
(a + 2) equal to 2.549509757 and -2.549509757.

Subproblem 1

a + 2 = 2.549509757 Simplifying a + 2 = 2.549509757 Reorder the terms: 2 + a = 2.549509757 Solving 2 + a = 2.549509757 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + a = 2.549509757 + -2 Combine like terms: 2 + -2 = 0 0 + a = 2.549509757 + -2 a = 2.549509757 + -2 Combine like terms: 2.549509757 + -2 = 0.549509757 a = 0.549509757 Simplifying a = 0.549509757

Subproblem 2

a + 2 = -2.549509757 Simplifying a + 2 = -2.549509757 Reorder the terms: 2 + a = -2.549509757 Solving 2 + a = -2.549509757 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-2' to each side of the equation. 2 + -2 + a = -2.549509757 + -2 Combine like terms: 2 + -2 = 0 0 + a = -2.549509757 + -2 a = -2.549509757 + -2 Combine like terms: -2.549509757 + -2 = -4.549509757 a = -4.549509757 Simplifying a = -4.549509757

Solution

The solution to the problem is based on the solutions from the subproblems. a = {0.549509757, -4.549509757}

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