3x(2x-3)=-8(2x+1)-7

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Solution for 3x(2x-3)=-8(2x+1)-7 equation:


Simplifying
3x(2x + -3) = -8(2x + 1) + -7

Reorder the terms:
3x(-3 + 2x) = -8(2x + 1) + -7
(-3 * 3x + 2x * 3x) = -8(2x + 1) + -7
(-9x + 6x2) = -8(2x + 1) + -7

Reorder the terms:
-9x + 6x2 = -8(1 + 2x) + -7
-9x + 6x2 = (1 * -8 + 2x * -8) + -7
-9x + 6x2 = (-8 + -16x) + -7

Reorder the terms:
-9x + 6x2 = -8 + -7 + -16x

Combine like terms: -8 + -7 = -15
-9x + 6x2 = -15 + -16x

Solving
-9x + 6x2 = -15 + -16x

Solving for variable 'x'.

Reorder the terms:
15 + -9x + 16x + 6x2 = -15 + -16x + 15 + 16x

Combine like terms: -9x + 16x = 7x
15 + 7x + 6x2 = -15 + -16x + 15 + 16x

Reorder the terms:
15 + 7x + 6x2 = -15 + 15 + -16x + 16x

Combine like terms: -15 + 15 = 0
15 + 7x + 6x2 = 0 + -16x + 16x
15 + 7x + 6x2 = -16x + 16x

Combine like terms: -16x + 16x = 0
15 + 7x + 6x2 = 0

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

Divide each side by '6'.
2.5 + 1.166666667x + x2 = 0

Move the constant term to the right:

Add '-2.5' to each side of the equation.
2.5 + 1.166666667x + -2.5 + x2 = 0 + -2.5

Reorder the terms:
2.5 + -2.5 + 1.166666667x + x2 = 0 + -2.5

Combine like terms: 2.5 + -2.5 = 0.0
0.0 + 1.166666667x + x2 = 0 + -2.5
1.166666667x + x2 = 0 + -2.5

Combine like terms: 0 + -2.5 = -2.5
1.166666667x + x2 = -2.5

The x term is 1.166666667x.  Take half its coefficient (0.5833333335).
Square it (0.3402777780) and add it to both sides.

Add '0.3402777780' to each side of the equation.
1.166666667x + 0.3402777780 + x2 = -2.5 + 0.3402777780

Reorder the terms:
0.3402777780 + 1.166666667x + x2 = -2.5 + 0.3402777780

Combine like terms: -2.5 + 0.3402777780 = -2.159722222
0.3402777780 + 1.166666667x + x2 = -2.159722222

Factor a perfect square on the left side:
(x + 0.5833333335)(x + 0.5833333335) = -2.159722222

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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