17x^2-51x-70=0

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Solution for 17x^2-51x-70=0 equation:


Simplifying
17x2 + -51x + -70 = 0

Reorder the terms:
-70 + -51x + 17x2 = 0

Solving
-70 + -51x + 17x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
17 the coefficient of the squared term: 

Divide each side by '17'.
-4.117647059 + -3x + x2 = 0

Move the constant term to the right:

Add '4.117647059' to each side of the equation.
-4.117647059 + -3x + 4.117647059 + x2 = 0 + 4.117647059

Reorder the terms:
-4.117647059 + 4.117647059 + -3x + x2 = 0 + 4.117647059

Combine like terms: -4.117647059 + 4.117647059 = 0.000000000
0.000000000 + -3x + x2 = 0 + 4.117647059
-3x + x2 = 0 + 4.117647059

Combine like terms: 0 + 4.117647059 = 4.117647059
-3x + x2 = 4.117647059

The x term is -3x.  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.
-3x + 2.25 + x2 = 4.117647059 + 2.25

Reorder the terms:
2.25 + -3x + x2 = 4.117647059 + 2.25

Combine like terms: 4.117647059 + 2.25 = 6.367647059
2.25 + -3x + x2 = 6.367647059

Factor a perfect square on the left side:
(x + -1.5)(x + -1.5) = 6.367647059

Calculate the square root of the right side: 2.523419715

Break this problem into two subproblems by setting 
(x + -1.5) equal to 2.523419715 and -2.523419715.

Subproblem 1

x + -1.5 = 2.523419715 Simplifying x + -1.5 = 2.523419715 Reorder the terms: -1.5 + x = 2.523419715 Solving -1.5 + x = 2.523419715 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = 2.523419715 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = 2.523419715 + 1.5 x = 2.523419715 + 1.5 Combine like terms: 2.523419715 + 1.5 = 4.023419715 x = 4.023419715 Simplifying x = 4.023419715

Subproblem 2

x + -1.5 = -2.523419715 Simplifying x + -1.5 = -2.523419715 Reorder the terms: -1.5 + x = -2.523419715 Solving -1.5 + x = -2.523419715 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.5' to each side of the equation. -1.5 + 1.5 + x = -2.523419715 + 1.5 Combine like terms: -1.5 + 1.5 = 0.0 0.0 + x = -2.523419715 + 1.5 x = -2.523419715 + 1.5 Combine like terms: -2.523419715 + 1.5 = -1.023419715 x = -1.023419715 Simplifying x = -1.023419715

Solution

The solution to the problem is based on the solutions from the subproblems. x = {4.023419715, -1.023419715}

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