x^2+17x-225=

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Solution for x^2+17x-225= equation:


Simplifying
x2 + 17x + -225 = 0

Reorder the terms:
-225 + 17x + x2 = 0

Solving
-225 + 17x + x2 = 0

Solving for variable 'x'.

Begin completing the square.

Move the constant term to the right:

Add '225' to each side of the equation.
-225 + 17x + 225 + x2 = 0 + 225

Reorder the terms:
-225 + 225 + 17x + x2 = 0 + 225

Combine like terms: -225 + 225 = 0
0 + 17x + x2 = 0 + 225
17x + x2 = 0 + 225

Combine like terms: 0 + 225 = 225
17x + x2 = 225

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 = 225 + 72.25

Reorder the terms:
72.25 + 17x + x2 = 225 + 72.25

Combine like terms: 225 + 72.25 = 297.25
72.25 + 17x + x2 = 297.25

Factor a perfect square on the left side:
(x + 8.5)(x + 8.5) = 297.25

Calculate the square root of the right side: 17.24093965

Break this problem into two subproblems by setting 
(x + 8.5) equal to 17.24093965 and -17.24093965.

Subproblem 1

x + 8.5 = 17.24093965 Simplifying x + 8.5 = 17.24093965 Reorder the terms: 8.5 + x = 17.24093965 Solving 8.5 + x = 17.24093965 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 = 17.24093965 + -8.5 Combine like terms: 8.5 + -8.5 = 0.0 0.0 + x = 17.24093965 + -8.5 x = 17.24093965 + -8.5 Combine like terms: 17.24093965 + -8.5 = 8.74093965 x = 8.74093965 Simplifying x = 8.74093965

Subproblem 2

x + 8.5 = -17.24093965 Simplifying x + 8.5 = -17.24093965 Reorder the terms: 8.5 + x = -17.24093965 Solving 8.5 + x = -17.24093965 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 = -17.24093965 + -8.5 Combine like terms: 8.5 + -8.5 = 0.0 0.0 + x = -17.24093965 + -8.5 x = -17.24093965 + -8.5 Combine like terms: -17.24093965 + -8.5 = -25.74093965 x = -25.74093965 Simplifying x = -25.74093965

Solution

The solution to the problem is based on the solutions from the subproblems. x = {8.74093965, -25.74093965}

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