(-8x^2-3)-(7x^2-3x+4)=

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Solution for (-8x^2-3)-(7x^2-3x+4)= equation: 


Simplifying
(-8x2 + -3) + -1(7x2 + -3x + 4) = 0

Reorder the terms:
(-3 + -8x2) + -1(7x2 + -3x + 4) = 0

Remove parenthesis around (-3 + -8x2)
-3 + -8x2 + -1(7x2 + -3x + 4) = 0

Reorder the terms:
-3 + -8x2 + -1(4 + -3x + 7x2) = 0
-3 + -8x2 + (4 * -1 + -3x * -1 + 7x2 * -1) = 0
-3 + -8x2 + (-4 + 3x + -7x2) = 0

Reorder the terms:
-3 + -4 + 3x + -8x2 + -7x2 = 0

Combine like terms: -3 + -4 = -7
-7 + 3x + -8x2 + -7x2 = 0

Combine like terms: -8x2 + -7x2 = -15x2
-7 + 3x + -15x2 = 0

Solving
-7 + 3x + -15x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-15 the coefficient of the squared term: 

Divide each side by '-15'.
0.4666666667 + -0.2x + x2 = 0

Move the constant term to the right:

Add '-0.4666666667' to each side of the equation.
0.4666666667 + -0.2x + -0.4666666667 + x2 = 0 + -0.4666666667

Reorder the terms:
0.4666666667 + -0.4666666667 + -0.2x + x2 = 0 + -0.4666666667

Combine like terms: 0.4666666667 + -0.4666666667 = 0.0000000000
0.0000000000 + -0.2x + x2 = 0 + -0.4666666667
-0.2x + x2 = 0 + -0.4666666667

Combine like terms: 0 + -0.4666666667 = -0.4666666667
-0.2x + x2 = -0.4666666667

The x term is -0.2x.  Take half its coefficient (-0.1).
Square it (0.01) and add it to both sides.

Add '0.01' to each side of the equation.
-0.2x + 0.01 + x2 = -0.4666666667 + 0.01

Reorder the terms:
0.01 + -0.2x + x2 = -0.4666666667 + 0.01

Combine like terms: -0.4666666667 + 0.01 = -0.4566666667
0.01 + -0.2x + x2 = -0.4566666667

Factor a perfect square on the left side:
(x + -0.1)(x + -0.1) = -0.4566666667

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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