25x^2-24x-9=-7x^2+12-18

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Solution for 25x^2-24x-9=-7x^2+12-18 equation:


Simplifying
25x2 + -24x + -9 = -7x2 + 12 + -18

Reorder the terms:
-9 + -24x + 25x2 = -7x2 + 12 + -18

Reorder the terms:
-9 + -24x + 25x2 = 12 + -18 + -7x2

Combine like terms: 12 + -18 = -6
-9 + -24x + 25x2 = -6 + -7x2

Solving
-9 + -24x + 25x2 = -6 + -7x2

Solving for variable 'x'.

Reorder the terms:
-9 + 6 + -24x + 25x2 + 7x2 = -6 + -7x2 + 6 + 7x2

Combine like terms: -9 + 6 = -3
-3 + -24x + 25x2 + 7x2 = -6 + -7x2 + 6 + 7x2

Combine like terms: 25x2 + 7x2 = 32x2
-3 + -24x + 32x2 = -6 + -7x2 + 6 + 7x2

Reorder the terms:
-3 + -24x + 32x2 = -6 + 6 + -7x2 + 7x2

Combine like terms: -6 + 6 = 0
-3 + -24x + 32x2 = 0 + -7x2 + 7x2
-3 + -24x + 32x2 = -7x2 + 7x2

Combine like terms: -7x2 + 7x2 = 0
-3 + -24x + 32x2 = 0

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

Divide each side by '32'.
-0.09375 + -0.75x + x2 = 0

Move the constant term to the right:

Add '0.09375' to each side of the equation.
-0.09375 + -0.75x + 0.09375 + x2 = 0 + 0.09375

Reorder the terms:
-0.09375 + 0.09375 + -0.75x + x2 = 0 + 0.09375

Combine like terms: -0.09375 + 0.09375 = 0.00000
0.00000 + -0.75x + x2 = 0 + 0.09375
-0.75x + x2 = 0 + 0.09375

Combine like terms: 0 + 0.09375 = 0.09375
-0.75x + x2 = 0.09375

The x term is -0.75x.  Take half its coefficient (-0.375).
Square it (0.140625) and add it to both sides.

Add '0.140625' to each side of the equation.
-0.75x + 0.140625 + x2 = 0.09375 + 0.140625

Reorder the terms:
0.140625 + -0.75x + x2 = 0.09375 + 0.140625

Combine like terms: 0.09375 + 0.140625 = 0.234375
0.140625 + -0.75x + x2 = 0.234375

Factor a perfect square on the left side:
(x + -0.375)(x + -0.375) = 0.234375

Calculate the square root of the right side: 0.484122918

Break this problem into two subproblems by setting 
(x + -0.375) equal to 0.484122918 and -0.484122918.

Subproblem 1

x + -0.375 = 0.484122918 Simplifying x + -0.375 = 0.484122918 Reorder the terms: -0.375 + x = 0.484122918 Solving -0.375 + x = 0.484122918 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + x = 0.484122918 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + x = 0.484122918 + 0.375 x = 0.484122918 + 0.375 Combine like terms: 0.484122918 + 0.375 = 0.859122918 x = 0.859122918 Simplifying x = 0.859122918

Subproblem 2

x + -0.375 = -0.484122918 Simplifying x + -0.375 = -0.484122918 Reorder the terms: -0.375 + x = -0.484122918 Solving -0.375 + x = -0.484122918 Solving for variable 'x'. Move all terms containing x to the left, all other terms to the right. Add '0.375' to each side of the equation. -0.375 + 0.375 + x = -0.484122918 + 0.375 Combine like terms: -0.375 + 0.375 = 0.000 0.000 + x = -0.484122918 + 0.375 x = -0.484122918 + 0.375 Combine like terms: -0.484122918 + 0.375 = -0.109122918 x = -0.109122918 Simplifying x = -0.109122918

Solution

The solution to the problem is based on the solutions from the subproblems. x = {0.859122918, -0.109122918}

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