x^2+17x+74=10

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Solution for x^2+17x+74=10 equation:


Simplifying
x2 + 17x + 74 = 10

Reorder the terms:
74 + 17x + x2 = 10

Solving
74 + 17x + x2 = 10

Solving for variable 'x'.

Reorder the terms:
74 + -10 + 17x + x2 = 10 + -10

Combine like terms: 74 + -10 = 64
64 + 17x + x2 = 10 + -10

Combine like terms: 10 + -10 = 0
64 + 17x + x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-64' to each side of the equation.
64 + 17x + -64 + x2 = 0 + -64

Reorder the terms:
64 + -64 + 17x + x2 = 0 + -64

Combine like terms: 64 + -64 = 0
0 + 17x + x2 = 0 + -64
17x + x2 = 0 + -64

Combine like terms: 0 + -64 = -64
17x + x2 = -64

The x term is 17x.  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.
17x + 72.25 + x2 = -64 + 72.25

Reorder the terms:
72.25 + 17x + x2 = -64 + 72.25

Combine like terms: -64 + 72.25 = 8.25
72.25 + 17x + x2 = 8.25

Factor a perfect square on the left side:
(x + 8.5)(x + 8.5) = 8.25

Calculate the square root of the right side: 2.872281323

Break this problem into two subproblems by setting 
(x + 8.5) equal to 2.872281323 and -2.872281323.

Subproblem 1

x + 8.5 = 2.872281323 Simplifying x + 8.5 = 2.872281323 Reorder the terms: 8.5 + x = 2.872281323 Solving 8.5 + x = 2.872281323 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8.5' to each side of the equation. 8.5 + -8.5 + x = 2.872281323 + -8.5 Combine like terms: 8.5 + -8.5 = 0.0 0.0 + x = 2.872281323 + -8.5 x = 2.872281323 + -8.5 Combine like terms: 2.872281323 + -8.5 = -5.627718677 x = -5.627718677 Simplifying x = -5.627718677

Subproblem 2

x + 8.5 = -2.872281323 Simplifying x + 8.5 = -2.872281323 Reorder the terms: 8.5 + x = -2.872281323 Solving 8.5 + x = -2.872281323 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8.5' to each side of the equation. 8.5 + -8.5 + x = -2.872281323 + -8.5 Combine like terms: 8.5 + -8.5 = 0.0 0.0 + x = -2.872281323 + -8.5 x = -2.872281323 + -8.5 Combine like terms: -2.872281323 + -8.5 = -11.372281323 x = -11.372281323 Simplifying x = -11.372281323

Solution

The solution to the problem is based on the solutions from the subproblems. x = {-5.627718677, -11.372281323}

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