2x-3+6x^2(7)=

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Solution for 2x-3+6x^2(7)= equation:


Simplifying
2x + -3 + 6x2(7) = 0

Reorder the terms for easier multiplication:
2x + -3 + 6 * 7x2 = 0

Multiply 6 * 7
2x + -3 + 42x2 = 0

Reorder the terms:
-3 + 2x + 42x2 = 0

Solving
-3 + 2x + 42x2 = 0

Solving for variable 'x'.

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

Divide each side by '42'.
-0.07142857143 + 0.04761904762x + x2 = 0

Move the constant term to the right:

Add '0.07142857143' to each side of the equation.
-0.07142857143 + 0.04761904762x + 0.07142857143 + x2 = 0 + 0.07142857143

Reorder the terms:
-0.07142857143 + 0.07142857143 + 0.04761904762x + x2 = 0 + 0.07142857143

Combine like terms: -0.07142857143 + 0.07142857143 = 0.00000000000
0.00000000000 + 0.04761904762x + x2 = 0 + 0.07142857143
0.04761904762x + x2 = 0 + 0.07142857143

Combine like terms: 0 + 0.07142857143 = 0.07142857143
0.04761904762x + x2 = 0.07142857143

The x term is 0.04761904762x.  Take half its coefficient (0.02380952381).
Square it (0.0005668934241) and add it to both sides.

Add '0.0005668934241' to each side of the equation.
0.04761904762x + 0.0005668934241 + x2 = 0.07142857143 + 0.0005668934241

Reorder the terms:
0.0005668934241 + 0.04761904762x + x2 = 0.07142857143 + 0.0005668934241

Combine like terms: 0.07142857143 + 0.0005668934241 = 0.0719954648541
0.0005668934241 + 0.04761904762x + x2 = 0.0719954648541

Factor a perfect square on the left side:
(x + 0.02380952381)(x + 0.02380952381) = 0.0719954648541

Calculate the square root of the right side: 0.268319706

Break this problem into two subproblems by setting 
(x + 0.02380952381) equal to 0.268319706 and -0.268319706.

Subproblem 1

x + 0.02380952381 = 0.268319706 Simplifying x + 0.02380952381 = 0.268319706 Reorder the terms: 0.02380952381 + x = 0.268319706 Solving 0.02380952381 + x = 0.268319706 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.02380952381' to each side of the equation. 0.02380952381 + -0.02380952381 + x = 0.268319706 + -0.02380952381 Combine like terms: 0.02380952381 + -0.02380952381 = 0.00000000000 0.00000000000 + x = 0.268319706 + -0.02380952381 x = 0.268319706 + -0.02380952381 Combine like terms: 0.268319706 + -0.02380952381 = 0.24451018219 x = 0.24451018219 Simplifying x = 0.24451018219

Subproblem 2

x + 0.02380952381 = -0.268319706 Simplifying x + 0.02380952381 = -0.268319706 Reorder the terms: 0.02380952381 + x = -0.268319706 Solving 0.02380952381 + x = -0.268319706 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-0.02380952381' to each side of the equation. 0.02380952381 + -0.02380952381 + x = -0.268319706 + -0.02380952381 Combine like terms: 0.02380952381 + -0.02380952381 = 0.00000000000 0.00000000000 + x = -0.268319706 + -0.02380952381 x = -0.268319706 + -0.02380952381 Combine like terms: -0.268319706 + -0.02380952381 = -0.29212922981 x = -0.29212922981 Simplifying x = -0.29212922981

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.24451018219, -0.29212922981}

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