(6x^2+7x-3)-(-2x^2+4x-5)=

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Solution for (6x^2+7x-3)-(-2x^2+4x-5)= equation:


Simplifying
(6x2 + 7x + -3) + -1(-2x2 + 4x + -5) = 0

Reorder the terms:
(-3 + 7x + 6x2) + -1(-2x2 + 4x + -5) = 0

Remove parenthesis around (-3 + 7x + 6x2)
-3 + 7x + 6x2 + -1(-2x2 + 4x + -5) = 0

Reorder the terms:
-3 + 7x + 6x2 + -1(-5 + 4x + -2x2) = 0
-3 + 7x + 6x2 + (-5 * -1 + 4x * -1 + -2x2 * -1) = 0
-3 + 7x + 6x2 + (5 + -4x + 2x2) = 0

Reorder the terms:
-3 + 5 + 7x + -4x + 6x2 + 2x2 = 0

Combine like terms: -3 + 5 = 2
2 + 7x + -4x + 6x2 + 2x2 = 0

Combine like terms: 7x + -4x = 3x
2 + 3x + 6x2 + 2x2 = 0

Combine like terms: 6x2 + 2x2 = 8x2
2 + 3x + 8x2 = 0

Solving
2 + 3x + 8x2 = 0

Solving for variable 'x'.

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

Divide each side by '8'.
0.25 + 0.375x + x2 = 0

Move the constant term to the right:

Add '-0.25' to each side of the equation.
0.25 + 0.375x + -0.25 + x2 = 0 + -0.25

Reorder the terms:
0.25 + -0.25 + 0.375x + x2 = 0 + -0.25

Combine like terms: 0.25 + -0.25 = 0.00
0.00 + 0.375x + x2 = 0 + -0.25
0.375x + x2 = 0 + -0.25

Combine like terms: 0 + -0.25 = -0.25
0.375x + x2 = -0.25

The x term is 0.375x.  Take half its coefficient (0.1875).
Square it (0.03515625) and add it to both sides.

Add '0.03515625' to each side of the equation.
0.375x + 0.03515625 + x2 = -0.25 + 0.03515625

Reorder the terms:
0.03515625 + 0.375x + x2 = -0.25 + 0.03515625

Combine like terms: -0.25 + 0.03515625 = -0.21484375
0.03515625 + 0.375x + x2 = -0.21484375

Factor a perfect square on the left side:
(x + 0.1875)(x + 0.1875) = -0.21484375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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