a^2-3a-48=0

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Solution for a^2-3a-48=0 equation:


Simplifying
a2 + -3a + -48 = 0

Reorder the terms:
-48 + -3a + a2 = 0

Solving
-48 + -3a + a2 = 0

Solving for variable 'a'.

Begin completing the square.

Move the constant term to the right:

Add '48' to each side of the equation.
-48 + -3a + 48 + a2 = 0 + 48

Reorder the terms:
-48 + 48 + -3a + a2 = 0 + 48

Combine like terms: -48 + 48 = 0
0 + -3a + a2 = 0 + 48
-3a + a2 = 0 + 48

Combine like terms: 0 + 48 = 48
-3a + a2 = 48

The a term is -3a.  Take half its coefficient (-1.5).
Square it (2.25) and add it to both sides.

Add '2.25' to each side of the equation.
-3a + 2.25 + a2 = 48 + 2.25

Reorder the terms:
2.25 + -3a + a2 = 48 + 2.25

Combine like terms: 48 + 2.25 = 50.25
2.25 + -3a + a2 = 50.25

Factor a perfect square on the left side:
(a + -1.5)(a + -1.5) = 50.25

Calculate the square root of the right side: 7.088723439

Break this problem into two subproblems by setting 
(a + -1.5) equal to 7.088723439 and -7.088723439.

Subproblem 1

a + -1.5 = 7.088723439 Simplifying a + -1.5 = 7.088723439 Reorder the terms: -1.5 + a = 7.088723439 Solving -1.5 + a = 7.088723439 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + a = 7.088723439 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + a = 7.088723439 + 1.5 a = 7.088723439 + 1.5 Combine like terms: 7.088723439 + 1.5 = 8.588723439 a = 8.588723439 Simplifying a = 8.588723439

Subproblem 2

a + -1.5 = -7.088723439 Simplifying a + -1.5 = -7.088723439 Reorder the terms: -1.5 + a = -7.088723439 Solving -1.5 + a = -7.088723439 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + a = -7.088723439 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + a = -7.088723439 + 1.5 a = -7.088723439 + 1.5 Combine like terms: -7.088723439 + 1.5 = -5.588723439 a = -5.588723439 Simplifying a = -5.588723439

Solution

The solution to the problem is based on the solutions from the subproblems. a = {8.588723439, -5.588723439}

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