2(8x^2+3x)-5(x+1)=

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Solution for 2(8x^2+3x)-5(x+1)= equation:


Simplifying
2(8x2 + 3x) + -5(x + 1) = 0

Reorder the terms:
2(3x + 8x2) + -5(x + 1) = 0
(3x * 2 + 8x2 * 2) + -5(x + 1) = 0
(6x + 16x2) + -5(x + 1) = 0

Reorder the terms:
6x + 16x2 + -5(1 + x) = 0
6x + 16x2 + (1 * -5 + x * -5) = 0
6x + 16x2 + (-5 + -5x) = 0

Reorder the terms:
-5 + 6x + -5x + 16x2 = 0

Combine like terms: 6x + -5x = 1x
-5 + 1x + 16x2 = 0

Solving
-5 + 1x + 16x2 = 0

Solving for variable 'x'.

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

Divide each side by '16'.
-0.3125 + 0.0625x + x2 = 0

Move the constant term to the right:

Add '0.3125' to each side of the equation.
-0.3125 + 0.0625x + 0.3125 + x2 = 0 + 0.3125

Reorder the terms:
-0.3125 + 0.3125 + 0.0625x + x2 = 0 + 0.3125

Combine like terms: -0.3125 + 0.3125 = 0.0000
0.0000 + 0.0625x + x2 = 0 + 0.3125
0.0625x + x2 = 0 + 0.3125

Combine like terms: 0 + 0.3125 = 0.3125
0.0625x + x2 = 0.3125

The x term is 0.0625x.  Take half its coefficient (0.03125).
Square it (0.0009765625) and add it to both sides.

Add '0.0009765625' to each side of the equation.
0.0625x + 0.0009765625 + x2 = 0.3125 + 0.0009765625

Reorder the terms:
0.0009765625 + 0.0625x + x2 = 0.3125 + 0.0009765625

Combine like terms: 0.3125 + 0.0009765625 = 0.3134765625
0.0009765625 + 0.0625x + x2 = 0.3134765625

Factor a perfect square on the left side:
(x + 0.03125)(x + 0.03125) = 0.3134765625

Calculate the square root of the right side: 0.559889777

Break this problem into two subproblems by setting 
(x + 0.03125) equal to 0.559889777 and -0.559889777.

Subproblem 1

x + 0.03125 = 0.559889777 Simplifying x + 0.03125 = 0.559889777 Reorder the terms: 0.03125 + x = 0.559889777 Solving 0.03125 + x = 0.559889777 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.03125' to each side of the equation. 0.03125 + -0.03125 + x = 0.559889777 + -0.03125 Combine like terms: 0.03125 + -0.03125 = 0.00000 0.00000 + x = 0.559889777 + -0.03125 x = 0.559889777 + -0.03125 Combine like terms: 0.559889777 + -0.03125 = 0.528639777 x = 0.528639777 Simplifying x = 0.528639777

Subproblem 2

x + 0.03125 = -0.559889777 Simplifying x + 0.03125 = -0.559889777 Reorder the terms: 0.03125 + x = -0.559889777 Solving 0.03125 + x = -0.559889777 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.03125' to each side of the equation. 0.03125 + -0.03125 + x = -0.559889777 + -0.03125 Combine like terms: 0.03125 + -0.03125 = 0.00000 0.00000 + x = -0.559889777 + -0.03125 x = -0.559889777 + -0.03125 Combine like terms: -0.559889777 + -0.03125 = -0.591139777 x = -0.591139777 Simplifying x = -0.591139777

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.528639777, -0.591139777}

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