5x^2-11x-3=3x+3

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Solution for 5x^2-11x-3=3x+3 equation:


Simplifying
5x2 + -11x + -3 = 3x + 3

Reorder the terms:
-3 + -11x + 5x2 = 3x + 3

Reorder the terms:
-3 + -11x + 5x2 = 3 + 3x

Solving
-3 + -11x + 5x2 = 3 + 3x

Solving for variable 'x'.

Reorder the terms:
-3 + -3 + -11x + -3x + 5x2 = 3 + 3x + -3 + -3x

Combine like terms: -3 + -3 = -6
-6 + -11x + -3x + 5x2 = 3 + 3x + -3 + -3x

Combine like terms: -11x + -3x = -14x
-6 + -14x + 5x2 = 3 + 3x + -3 + -3x

Reorder the terms:
-6 + -14x + 5x2 = 3 + -3 + 3x + -3x

Combine like terms: 3 + -3 = 0
-6 + -14x + 5x2 = 0 + 3x + -3x
-6 + -14x + 5x2 = 3x + -3x

Combine like terms: 3x + -3x = 0
-6 + -14x + 5x2 = 0

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

Divide each side by '5'.
-1.2 + -2.8x + x2 = 0

Move the constant term to the right:

Add '1.2' to each side of the equation.
-1.2 + -2.8x + 1.2 + x2 = 0 + 1.2

Reorder the terms:
-1.2 + 1.2 + -2.8x + x2 = 0 + 1.2

Combine like terms: -1.2 + 1.2 = 0.0
0.0 + -2.8x + x2 = 0 + 1.2
-2.8x + x2 = 0 + 1.2

Combine like terms: 0 + 1.2 = 1.2
-2.8x + x2 = 1.2

The x term is -2.8x.  Take half its coefficient (-1.4).
Square it (1.96) and add it to both sides.

Add '1.96' to each side of the equation.
-2.8x + 1.96 + x2 = 1.2 + 1.96

Reorder the terms:
1.96 + -2.8x + x2 = 1.2 + 1.96

Combine like terms: 1.2 + 1.96 = 3.16
1.96 + -2.8x + x2 = 3.16

Factor a perfect square on the left side:
(x + -1.4)(x + -1.4) = 3.16

Calculate the square root of the right side: 1.777638883

Break this problem into two subproblems by setting 
(x + -1.4) equal to 1.777638883 and -1.777638883.

Subproblem 1

x + -1.4 = 1.777638883 Simplifying x + -1.4 = 1.777638883 Reorder the terms: -1.4 + x = 1.777638883 Solving -1.4 + x = 1.777638883 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.4' to each side of the equation. -1.4 + 1.4 + x = 1.777638883 + 1.4 Combine like terms: -1.4 + 1.4 = 0.0 0.0 + x = 1.777638883 + 1.4 x = 1.777638883 + 1.4 Combine like terms: 1.777638883 + 1.4 = 3.177638883 x = 3.177638883 Simplifying x = 3.177638883

Subproblem 2

x + -1.4 = -1.777638883 Simplifying x + -1.4 = -1.777638883 Reorder the terms: -1.4 + x = -1.777638883 Solving -1.4 + x = -1.777638883 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '1.4' to each side of the equation. -1.4 + 1.4 + x = -1.777638883 + 1.4 Combine like terms: -1.4 + 1.4 = 0.0 0.0 + x = -1.777638883 + 1.4 x = -1.777638883 + 1.4 Combine like terms: -1.777638883 + 1.4 = -0.377638883 x = -0.377638883 Simplifying x = -0.377638883

Solution

The solution to the problem is based on the solutions from the subproblems. x = {3.177638883, -0.377638883}

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