3x-2=16x^2-9

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Solution for 3x-2=16x^2-9 equation:


Simplifying
3x + -2 = 16x2 + -9

Reorder the terms:
-2 + 3x = 16x2 + -9

Reorder the terms:
-2 + 3x = -9 + 16x2

Solving
-2 + 3x = -9 + 16x2

Solving for variable 'x'.

Reorder the terms:
-2 + 9 + 3x + -16x2 = -9 + 16x2 + 9 + -16x2

Combine like terms: -2 + 9 = 7
7 + 3x + -16x2 = -9 + 16x2 + 9 + -16x2

Reorder the terms:
7 + 3x + -16x2 = -9 + 9 + 16x2 + -16x2

Combine like terms: -9 + 9 = 0
7 + 3x + -16x2 = 0 + 16x2 + -16x2
7 + 3x + -16x2 = 16x2 + -16x2

Combine like terms: 16x2 + -16x2 = 0
7 + 3x + -16x2 = 0

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

Divide each side by '-16'.
-0.4375 + -0.1875x + x2 = 0

Move the constant term to the right:

Add '0.4375' to each side of the equation.
-0.4375 + -0.1875x + 0.4375 + x2 = 0 + 0.4375

Reorder the terms:
-0.4375 + 0.4375 + -0.1875x + x2 = 0 + 0.4375

Combine like terms: -0.4375 + 0.4375 = 0.0000
0.0000 + -0.1875x + x2 = 0 + 0.4375
-0.1875x + x2 = 0 + 0.4375

Combine like terms: 0 + 0.4375 = 0.4375
-0.1875x + x2 = 0.4375

The x term is -0.1875x.  Take half its coefficient (-0.09375).
Square it (0.0087890625) and add it to both sides.

Add '0.0087890625' to each side of the equation.
-0.1875x + 0.0087890625 + x2 = 0.4375 + 0.0087890625

Reorder the terms:
0.0087890625 + -0.1875x + x2 = 0.4375 + 0.0087890625

Combine like terms: 0.4375 + 0.0087890625 = 0.4462890625
0.0087890625 + -0.1875x + x2 = 0.4462890625

Factor a perfect square on the left side:
(x + -0.09375)(x + -0.09375) = 0.4462890625

Calculate the square root of the right side: 0.668048698

Break this problem into two subproblems by setting 
(x + -0.09375) equal to 0.668048698 and -0.668048698.

Subproblem 1

x + -0.09375 = 0.668048698 Simplifying x + -0.09375 = 0.668048698 Reorder the terms: -0.09375 + x = 0.668048698 Solving -0.09375 + x = 0.668048698 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.09375' to each side of the equation. -0.09375 + 0.09375 + x = 0.668048698 + 0.09375 Combine like terms: -0.09375 + 0.09375 = 0.00000 0.00000 + x = 0.668048698 + 0.09375 x = 0.668048698 + 0.09375 Combine like terms: 0.668048698 + 0.09375 = 0.761798698 x = 0.761798698 Simplifying x = 0.761798698

Subproblem 2

x + -0.09375 = -0.668048698 Simplifying x + -0.09375 = -0.668048698 Reorder the terms: -0.09375 + x = -0.668048698 Solving -0.09375 + x = -0.668048698 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.09375' to each side of the equation. -0.09375 + 0.09375 + x = -0.668048698 + 0.09375 Combine like terms: -0.09375 + 0.09375 = 0.00000 0.00000 + x = -0.668048698 + 0.09375 x = -0.668048698 + 0.09375 Combine like terms: -0.668048698 + 0.09375 = -0.574298698 x = -0.574298698 Simplifying x = -0.574298698

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.761798698, -0.574298698}

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