(6x^2+8x+12)-(4x^2+3x-2)=

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Solution for (6x^2+8x+12)-(4x^2+3x-2)= equation:


Simplifying
(6x2 + 8x + 12) + -1(4x2 + 3x + -2) = 0

Reorder the terms:
(12 + 8x + 6x2) + -1(4x2 + 3x + -2) = 0

Remove parenthesis around (12 + 8x + 6x2)
12 + 8x + 6x2 + -1(4x2 + 3x + -2) = 0

Reorder the terms:
12 + 8x + 6x2 + -1(-2 + 3x + 4x2) = 0
12 + 8x + 6x2 + (-2 * -1 + 3x * -1 + 4x2 * -1) = 0
12 + 8x + 6x2 + (2 + -3x + -4x2) = 0

Reorder the terms:
12 + 2 + 8x + -3x + 6x2 + -4x2 = 0

Combine like terms: 12 + 2 = 14
14 + 8x + -3x + 6x2 + -4x2 = 0

Combine like terms: 8x + -3x = 5x
14 + 5x + 6x2 + -4x2 = 0

Combine like terms: 6x2 + -4x2 = 2x2
14 + 5x + 2x2 = 0

Solving
14 + 5x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
7 + 2.5x + x2 = 0

Move the constant term to the right:

Add '-7' to each side of the equation.
7 + 2.5x + -7 + x2 = 0 + -7

Reorder the terms:
7 + -7 + 2.5x + x2 = 0 + -7

Combine like terms: 7 + -7 = 0
0 + 2.5x + x2 = 0 + -7
2.5x + x2 = 0 + -7

Combine like terms: 0 + -7 = -7
2.5x + x2 = -7

The x term is 2.5x.  Take half its coefficient (1.25).
Square it (1.5625) and add it to both sides.

Add '1.5625' to each side of the equation.
2.5x + 1.5625 + x2 = -7 + 1.5625

Reorder the terms:
1.5625 + 2.5x + x2 = -7 + 1.5625

Combine like terms: -7 + 1.5625 = -5.4375
1.5625 + 2.5x + x2 = -5.4375

Factor a perfect square on the left side:
(x + 1.25)(x + 1.25) = -5.4375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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