2x(5x-3)=17

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Solution for 2x(5x-3)=17 equation:


Simplifying
2x(5x + -3) = 17

Reorder the terms:
2x(-3 + 5x) = 17
(-3 * 2x + 5x * 2x) = 17
(-6x + 10x2) = 17

Solving
-6x + 10x2 = 17

Solving for variable 'x'.

Reorder the terms:
-17 + -6x + 10x2 = 17 + -17

Combine like terms: 17 + -17 = 0
-17 + -6x + 10x2 = 0

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

Divide each side by '10'.
-1.7 + -0.6x + x2 = 0.0

Move the constant term to the right:

Add '1.7' to each side of the equation.
-1.7 + -0.6x + 1.7 + x2 = 0.0 + 1.7

Reorder the terms:
-1.7 + 1.7 + -0.6x + x2 = 0.0 + 1.7

Combine like terms: -1.7 + 1.7 = 0.0
0.0 + -0.6x + x2 = 0.0 + 1.7
-0.6x + x2 = 0.0 + 1.7

Combine like terms: 0.0 + 1.7 = 1.7
-0.6x + x2 = 1.7

The x term is -0.6x.  Take half its coefficient (-0.3).
Square it (0.09) and add it to both sides.

Add '0.09' to each side of the equation.
-0.6x + 0.09 + x2 = 1.7 + 0.09

Reorder the terms:
0.09 + -0.6x + x2 = 1.7 + 0.09

Combine like terms: 1.7 + 0.09 = 1.79
0.09 + -0.6x + x2 = 1.79

Factor a perfect square on the left side:
(x + -0.3)(x + -0.3) = 1.79

Calculate the square root of the right side: 1.337908816

Break this problem into two subproblems by setting 
(x + -0.3) equal to 1.337908816 and -1.337908816.

Subproblem 1

x + -0.3 = 1.337908816 Simplifying x + -0.3 = 1.337908816 Reorder the terms: -0.3 + x = 1.337908816 Solving -0.3 + x = 1.337908816 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3' to each side of the equation. -0.3 + 0.3 + x = 1.337908816 + 0.3 Combine like terms: -0.3 + 0.3 = 0.0 0.0 + x = 1.337908816 + 0.3 x = 1.337908816 + 0.3 Combine like terms: 1.337908816 + 0.3 = 1.637908816 x = 1.637908816 Simplifying x = 1.637908816

Subproblem 2

x + -0.3 = -1.337908816 Simplifying x + -0.3 = -1.337908816 Reorder the terms: -0.3 + x = -1.337908816 Solving -0.3 + x = -1.337908816 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.3' to each side of the equation. -0.3 + 0.3 + x = -1.337908816 + 0.3 Combine like terms: -0.3 + 0.3 = 0.0 0.0 + x = -1.337908816 + 0.3 x = -1.337908816 + 0.3 Combine like terms: -1.337908816 + 0.3 = -1.037908816 x = -1.037908816 Simplifying x = -1.037908816

Solution

The solution to the problem is based on the solutions from the subproblems. x = {1.637908816, -1.037908816}

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