(9x^2+8x-2)+(-5x^2-7x+3)=

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Solution for (9x^2+8x-2)+(-5x^2-7x+3)= equation:


Simplifying
(9x2 + 8x + -2) + (-5x2 + -7x + 3) = 0

Reorder the terms:
(-2 + 8x + 9x2) + (-5x2 + -7x + 3) = 0

Remove parenthesis around (-2 + 8x + 9x2)
-2 + 8x + 9x2 + (-5x2 + -7x + 3) = 0

Reorder the terms:
-2 + 8x + 9x2 + (3 + -7x + -5x2) = 0

Remove parenthesis around (3 + -7x + -5x2)
-2 + 8x + 9x2 + 3 + -7x + -5x2 = 0

Reorder the terms:
-2 + 3 + 8x + -7x + 9x2 + -5x2 = 0

Combine like terms: -2 + 3 = 1
1 + 8x + -7x + 9x2 + -5x2 = 0

Combine like terms: 8x + -7x = 1x
1 + 1x + 9x2 + -5x2 = 0

Combine like terms: 9x2 + -5x2 = 4x2
1 + 1x + 4x2 = 0

Solving
1 + 1x + 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'.
0.25 + 0.25x + x2 = 0

Move the constant term to the right:

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

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

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

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

The x term is 0.25x.  Take half its coefficient (0.125).
Square it (0.015625) and add it to both sides.

Add '0.015625' to each side of the equation.
0.25x + 0.015625 + x2 = -0.25 + 0.015625

Reorder the terms:
0.015625 + 0.25x + x2 = -0.25 + 0.015625

Combine like terms: -0.25 + 0.015625 = -0.234375
0.015625 + 0.25x + x2 = -0.234375

Factor a perfect square on the left side:
(x + 0.125)(x + 0.125) = -0.234375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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