3x^2+48x-7=0

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Solution for 3x^2+48x-7=0 equation:


Simplifying
3x2 + 48x + -7 = 0

Reorder the terms:
-7 + 48x + 3x2 = 0

Solving
-7 + 48x + 3x2 = 0

Solving for variable 'x'.

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

Divide each side by '3'.
-2.333333333 + 16x + x2 = 0

Move the constant term to the right:

Add '2.333333333' to each side of the equation.
-2.333333333 + 16x + 2.333333333 + x2 = 0 + 2.333333333

Reorder the terms:
-2.333333333 + 2.333333333 + 16x + x2 = 0 + 2.333333333

Combine like terms: -2.333333333 + 2.333333333 = 0.000000000
0.000000000 + 16x + x2 = 0 + 2.333333333
16x + x2 = 0 + 2.333333333

Combine like terms: 0 + 2.333333333 = 2.333333333
16x + x2 = 2.333333333

The x term is 16x.  Take half its coefficient (8).
Square it (64) and add it to both sides.

Add '64' to each side of the equation.
16x + 64 + x2 = 2.333333333 + 64

Reorder the terms:
64 + 16x + x2 = 2.333333333 + 64

Combine like terms: 2.333333333 + 64 = 66.333333333
64 + 16x + x2 = 66.333333333

Factor a perfect square on the left side:
(x + 8)(x + 8) = 66.333333333

Calculate the square root of the right side: 8.144527815

Break this problem into two subproblems by setting 
(x + 8) equal to 8.144527815 and -8.144527815.

Subproblem 1

x + 8 = 8.144527815 Simplifying x + 8 = 8.144527815 Reorder the terms: 8 + x = 8.144527815 Solving 8 + x = 8.144527815 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = 8.144527815 + -8 Combine like terms: 8 + -8 = 0 0 + x = 8.144527815 + -8 x = 8.144527815 + -8 Combine like terms: 8.144527815 + -8 = 0.144527815 x = 0.144527815 Simplifying x = 0.144527815

Subproblem 2

x + 8 = -8.144527815 Simplifying x + 8 = -8.144527815 Reorder the terms: 8 + x = -8.144527815 Solving 8 + x = -8.144527815 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '-8' to each side of the equation. 8 + -8 + x = -8.144527815 + -8 Combine like terms: 8 + -8 = 0 0 + x = -8.144527815 + -8 x = -8.144527815 + -8 Combine like terms: -8.144527815 + -8 = -16.144527815 x = -16.144527815 Simplifying x = -16.144527815

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.144527815, -16.144527815}

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