(-x^2+3x-10)-(3x^2-4)=0

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Solution for (-x^2+3x-10)-(3x^2-4)=0 equation:


Simplifying
(-1x2 + 3x + -10) + -1(3x2 + -4) = 0

Reorder the terms:
(-10 + 3x + -1x2) + -1(3x2 + -4) = 0

Remove parenthesis around (-10 + 3x + -1x2)
-10 + 3x + -1x2 + -1(3x2 + -4) = 0

Reorder the terms:
-10 + 3x + -1x2 + -1(-4 + 3x2) = 0
-10 + 3x + -1x2 + (-4 * -1 + 3x2 * -1) = 0
-10 + 3x + -1x2 + (4 + -3x2) = 0

Reorder the terms:
-10 + 4 + 3x + -1x2 + -3x2 = 0

Combine like terms: -10 + 4 = -6
-6 + 3x + -1x2 + -3x2 = 0

Combine like terms: -1x2 + -3x2 = -4x2
-6 + 3x + -4x2 = 0

Solving
-6 + 3x + -4x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-4 the coefficient of the squared term: 

Divide each side by '-4'.
1.5 + -0.75x + x2 = 0

Move the constant term to the right:

Add '-1.5' to each side of the equation.
1.5 + -0.75x + -1.5 + x2 = 0 + -1.5

Reorder the terms:
1.5 + -1.5 + -0.75x + x2 = 0 + -1.5

Combine like terms: 1.5 + -1.5 = 0.0
0.0 + -0.75x + x2 = 0 + -1.5
-0.75x + x2 = 0 + -1.5

Combine like terms: 0 + -1.5 = -1.5
-0.75x + x2 = -1.5

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 = -1.5 + 0.140625

Reorder the terms:
0.140625 + -0.75x + x2 = -1.5 + 0.140625

Combine like terms: -1.5 + 0.140625 = -1.359375
0.140625 + -0.75x + x2 = -1.359375

Factor a perfect square on the left side:
(x + -0.375)(x + -0.375) = -1.359375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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