a^2-14a=48

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Solution for a^2-14a=48 equation:


Simplifying
a2 + -14a = 48

Reorder the terms:
-14a + a2 = 48

Solving
-14a + a2 = 48

Solving for variable 'a'.

Reorder the terms:
-48 + -14a + a2 = 48 + -48

Combine like terms: 48 + -48 = 0
-48 + -14a + a2 = 0

Begin completing the square.

Move the constant term to the right:

Add '48' to each side of the equation.
-48 + -14a + 48 + a2 = 0 + 48

Reorder the terms:
-48 + 48 + -14a + a2 = 0 + 48

Combine like terms: -48 + 48 = 0
0 + -14a + a2 = 0 + 48
-14a + a2 = 0 + 48

Combine like terms: 0 + 48 = 48
-14a + a2 = 48

The a term is -14a.  Take half its coefficient (-7).
Square it (49) and add it to both sides.

Add '49' to each side of the equation.
-14a + 49 + a2 = 48 + 49

Reorder the terms:
49 + -14a + a2 = 48 + 49

Combine like terms: 48 + 49 = 97
49 + -14a + a2 = 97

Factor a perfect square on the left side:
(a + -7)(a + -7) = 97

Calculate the square root of the right side: 9.848857802

Break this problem into two subproblems by setting 
(a + -7) equal to 9.848857802 and -9.848857802.

Subproblem 1

a + -7 = 9.848857802 Simplifying a + -7 = 9.848857802 Reorder the terms: -7 + a = 9.848857802 Solving -7 + a = 9.848857802 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + a = 9.848857802 + 7 Combine like terms: -7 + 7 = 0 0 + a = 9.848857802 + 7 a = 9.848857802 + 7 Combine like terms: 9.848857802 + 7 = 16.848857802 a = 16.848857802 Simplifying a = 16.848857802

Subproblem 2

a + -7 = -9.848857802 Simplifying a + -7 = -9.848857802 Reorder the terms: -7 + a = -9.848857802 Solving -7 + a = -9.848857802 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '7' to each side of the equation. -7 + 7 + a = -9.848857802 + 7 Combine like terms: -7 + 7 = 0 0 + a = -9.848857802 + 7 a = -9.848857802 + 7 Combine like terms: -9.848857802 + 7 = -2.848857802 a = -2.848857802 Simplifying a = -2.848857802

Solution

The solution to the problem is based on the solutions from the subproblems. a = {16.848857802, -2.848857802}

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