a^2-17a-24=0

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Solution for a^2-17a-24=0 equation:


Simplifying
a2 + -17a + -24 = 0

Reorder the terms:
-24 + -17a + a2 = 0

Solving
-24 + -17a + a2 = 0

Solving for variable 'a'.

Begin completing the square.

Move the constant term to the right:

Add '24' to each side of the equation.
-24 + -17a + 24 + a2 = 0 + 24

Reorder the terms:
-24 + 24 + -17a + a2 = 0 + 24

Combine like terms: -24 + 24 = 0
0 + -17a + a2 = 0 + 24
-17a + a2 = 0 + 24

Combine like terms: 0 + 24 = 24
-17a + a2 = 24

The a term is -17a.  Take half its coefficient (-8.5).
Square it (72.25) and add it to both sides.

Add '72.25' to each side of the equation.
-17a + 72.25 + a2 = 24 + 72.25

Reorder the terms:
72.25 + -17a + a2 = 24 + 72.25

Combine like terms: 24 + 72.25 = 96.25
72.25 + -17a + a2 = 96.25

Factor a perfect square on the left side:
(a + -8.5)(a + -8.5) = 96.25

Calculate the square root of the right side: 9.810708435

Break this problem into two subproblems by setting 
(a + -8.5) equal to 9.810708435 and -9.810708435.

Subproblem 1

a + -8.5 = 9.810708435 Simplifying a + -8.5 = 9.810708435 Reorder the terms: -8.5 + a = 9.810708435 Solving -8.5 + a = 9.810708435 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '8.5' to each side of the equation. -8.5 + 8.5 + a = 9.810708435 + 8.5 Combine like terms: -8.5 + 8.5 = 0.0 0.0 + a = 9.810708435 + 8.5 a = 9.810708435 + 8.5 Combine like terms: 9.810708435 + 8.5 = 18.310708435 a = 18.310708435 Simplifying a = 18.310708435

Subproblem 2

a + -8.5 = -9.810708435 Simplifying a + -8.5 = -9.810708435 Reorder the terms: -8.5 + a = -9.810708435 Solving -8.5 + a = -9.810708435 Solving for variable 'a'. Move all terms containing a to the left, all other terms to the right. Add '8.5' to each side of the equation. -8.5 + 8.5 + a = -9.810708435 + 8.5 Combine like terms: -8.5 + 8.5 = 0.0 0.0 + a = -9.810708435 + 8.5 a = -9.810708435 + 8.5 Combine like terms: -9.810708435 + 8.5 = -1.310708435 a = -1.310708435 Simplifying a = -1.310708435

Solution

The solution to the problem is based on the solutions from the subproblems. a = {18.310708435, -1.310708435}

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