(9x^2+6x+3)+(4x^2-8x+4)=

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Solution for (9x^2+6x+3)+(4x^2-8x+4)= equation:


Simplifying
(9x2 + 6x + 3) + (4x2 + -8x + 4) = 0

Reorder the terms:
(3 + 6x + 9x2) + (4x2 + -8x + 4) = 0

Remove parenthesis around (3 + 6x + 9x2)
3 + 6x + 9x2 + (4x2 + -8x + 4) = 0

Reorder the terms:
3 + 6x + 9x2 + (4 + -8x + 4x2) = 0

Remove parenthesis around (4 + -8x + 4x2)
3 + 6x + 9x2 + 4 + -8x + 4x2 = 0

Reorder the terms:
3 + 4 + 6x + -8x + 9x2 + 4x2 = 0

Combine like terms: 3 + 4 = 7
7 + 6x + -8x + 9x2 + 4x2 = 0

Combine like terms: 6x + -8x = -2x
7 + -2x + 9x2 + 4x2 = 0

Combine like terms: 9x2 + 4x2 = 13x2
7 + -2x + 13x2 = 0

Solving
7 + -2x + 13x2 = 0

Solving for variable 'x'.

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

Divide each side by '13'.
0.5384615385 + -0.1538461538x + x2 = 0

Move the constant term to the right:

Add '-0.5384615385' to each side of the equation.
0.5384615385 + -0.1538461538x + -0.5384615385 + x2 = 0 + -0.5384615385

Reorder the terms:
0.5384615385 + -0.5384615385 + -0.1538461538x + x2 = 0 + -0.5384615385

Combine like terms: 0.5384615385 + -0.5384615385 = 0.0000000000
0.0000000000 + -0.1538461538x + x2 = 0 + -0.5384615385
-0.1538461538x + x2 = 0 + -0.5384615385

Combine like terms: 0 + -0.5384615385 = -0.5384615385
-0.1538461538x + x2 = -0.5384615385

The x term is -0.1538461538x.  Take half its coefficient (-0.0769230769).
Square it (0.005917159760) and add it to both sides.

Add '0.005917159760' to each side of the equation.
-0.1538461538x + 0.005917159760 + x2 = -0.5384615385 + 0.005917159760

Reorder the terms:
0.005917159760 + -0.1538461538x + x2 = -0.5384615385 + 0.005917159760

Combine like terms: -0.5384615385 + 0.005917159760 = -0.53254437874
0.005917159760 + -0.1538461538x + x2 = -0.53254437874

Factor a perfect square on the left side:
(x + -0.0769230769)(x + -0.0769230769) = -0.53254437874

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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