-49+16a^2-a=0

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Solution for -49+16a^2-a=0 equation:


Simplifying
-49 + 16a2 + -1a = 0

Reorder the terms:
-49 + -1a + 16a2 = 0

Solving
-49 + -1a + 16a2 = 0

Solving for variable 'a'.

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

Divide each side by '16'.
-3.0625 + -0.0625a + a2 = 0

Move the constant term to the right:

Add '3.0625' to each side of the equation.
-3.0625 + -0.0625a + 3.0625 + a2 = 0 + 3.0625

Reorder the terms:
-3.0625 + 3.0625 + -0.0625a + a2 = 0 + 3.0625

Combine like terms: -3.0625 + 3.0625 = 0.0000
0.0000 + -0.0625a + a2 = 0 + 3.0625
-0.0625a + a2 = 0 + 3.0625

Combine like terms: 0 + 3.0625 = 3.0625
-0.0625a + a2 = 3.0625

The a term is -0.0625a.  Take half its coefficient (-0.03125).
Square it (0.0009765625) and add it to both sides.

Add '0.0009765625' to each side of the equation.
-0.0625a + 0.0009765625 + a2 = 3.0625 + 0.0009765625

Reorder the terms:
0.0009765625 + -0.0625a + a2 = 3.0625 + 0.0009765625

Combine like terms: 3.0625 + 0.0009765625 = 3.0634765625
0.0009765625 + -0.0625a + a2 = 3.0634765625

Factor a perfect square on the left side:
(a + -0.03125)(a + -0.03125) = 3.0634765625

Calculate the square root of the right side: 1.750278996

Break this problem into two subproblems by setting 
(a + -0.03125) equal to 1.750278996 and -1.750278996.

Subproblem 1

a + -0.03125 = 1.750278996 Simplifying a + -0.03125 = 1.750278996 Reorder the terms: -0.03125 + a = 1.750278996 Solving -0.03125 + a = 1.750278996 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '0.03125' to each side of the equation. -0.03125 + 0.03125 + a = 1.750278996 + 0.03125 Combine like terms: -0.03125 + 0.03125 = 0.00000 0.00000 + a = 1.750278996 + 0.03125 a = 1.750278996 + 0.03125 Combine like terms: 1.750278996 + 0.03125 = 1.781528996 a = 1.781528996 Simplifying a = 1.781528996

Subproblem 2

a + -0.03125 = -1.750278996 Simplifying a + -0.03125 = -1.750278996 Reorder the terms: -0.03125 + a = -1.750278996 Solving -0.03125 + a = -1.750278996 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '0.03125' to each side of the equation. -0.03125 + 0.03125 + a = -1.750278996 + 0.03125 Combine like terms: -0.03125 + 0.03125 = 0.00000 0.00000 + a = -1.750278996 + 0.03125 a = -1.750278996 + 0.03125 Combine like terms: -1.750278996 + 0.03125 = -1.719028996 a = -1.719028996 Simplifying a = -1.719028996

Solution

The solution to the problem is based on the solutions from the subproblems. a = {1.781528996, -1.719028996}

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