4a^2+8a-29=0

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Solution for 4a^2+8a-29=0 equation:


Simplifying
4a2 + 8a + -29 = 0

Reorder the terms:
-29 + 8a + 4a2 = 0

Solving
-29 + 8a + 4a2 = 0

Solving for variable 'a'.

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

Divide each side by '4'.
-7.25 + 2a + a2 = 0

Move the constant term to the right:

Add '7.25' to each side of the equation.
-7.25 + 2a + 7.25 + a2 = 0 + 7.25

Reorder the terms:
-7.25 + 7.25 + 2a + a2 = 0 + 7.25

Combine like terms: -7.25 + 7.25 = 0.00
0.00 + 2a + a2 = 0 + 7.25
2a + a2 = 0 + 7.25

Combine like terms: 0 + 7.25 = 7.25
2a + a2 = 7.25

The a term is 2a.  Take half its coefficient (1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
2a + 1 + a2 = 7.25 + 1

Reorder the terms:
1 + 2a + a2 = 7.25 + 1

Combine like terms: 7.25 + 1 = 8.25
1 + 2a + a2 = 8.25

Factor a perfect square on the left side:
(a + 1)(a + 1) = 8.25

Calculate the square root of the right side: 2.872281323

Break this problem into two subproblems by setting 
(a + 1) equal to 2.872281323 and -2.872281323.

Subproblem 1

a + 1 = 2.872281323 Simplifying a + 1 = 2.872281323 Reorder the terms: 1 + a = 2.872281323 Solving 1 + a = 2.872281323 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + a = 2.872281323 + -1 Combine like terms: 1 + -1 = 0 0 + a = 2.872281323 + -1 a = 2.872281323 + -1 Combine like terms: 2.872281323 + -1 = 1.872281323 a = 1.872281323 Simplifying a = 1.872281323

Subproblem 2

a + 1 = -2.872281323 Simplifying a + 1 = -2.872281323 Reorder the terms: 1 + a = -2.872281323 Solving 1 + a = -2.872281323 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '-1' to each side of the equation. 1 + -1 + a = -2.872281323 + -1 Combine like terms: 1 + -1 = 0 0 + a = -2.872281323 + -1 a = -2.872281323 + -1 Combine like terms: -2.872281323 + -1 = -3.872281323 a = -3.872281323 Simplifying a = -3.872281323

Solution

The solution to the problem is based on the solutions from the subproblems. a = {1.872281323, -3.872281323}

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