(2x-9)-(10x^2-2x+4)=

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Solution for (2x-9)-(10x^2-2x+4)= equation:


Simplifying
(2x + -9) + -1(10x2 + -2x + 4) = 0

Reorder the terms:
(-9 + 2x) + -1(10x2 + -2x + 4) = 0

Remove parenthesis around (-9 + 2x)
-9 + 2x + -1(10x2 + -2x + 4) = 0

Reorder the terms:
-9 + 2x + -1(4 + -2x + 10x2) = 0
-9 + 2x + (4 * -1 + -2x * -1 + 10x2 * -1) = 0
-9 + 2x + (-4 + 2x + -10x2) = 0

Reorder the terms:
-9 + -4 + 2x + 2x + -10x2 = 0

Combine like terms: -9 + -4 = -13
-13 + 2x + 2x + -10x2 = 0

Combine like terms: 2x + 2x = 4x
-13 + 4x + -10x2 = 0

Solving
-13 + 4x + -10x2 = 0

Solving for variable 'x'.

Begin completing the square.  Divide all terms by
-10 the coefficient of the squared term: 

Divide each side by '-10'.
1.3 + -0.4x + x2 = 0.0

Move the constant term to the right:

Add '-1.3' to each side of the equation.
1.3 + -0.4x + -1.3 + x2 = 0.0 + -1.3

Reorder the terms:
1.3 + -1.3 + -0.4x + x2 = 0.0 + -1.3

Combine like terms: 1.3 + -1.3 = 0.0
0.0 + -0.4x + x2 = 0.0 + -1.3
-0.4x + x2 = 0.0 + -1.3

Combine like terms: 0.0 + -1.3 = -1.3
-0.4x + x2 = -1.3

The x term is -0.4x.  Take half its coefficient (-0.2).
Square it (0.04) and add it to both sides.

Add '0.04' to each side of the equation.
-0.4x + 0.04 + x2 = -1.3 + 0.04

Reorder the terms:
0.04 + -0.4x + x2 = -1.3 + 0.04

Combine like terms: -1.3 + 0.04 = -1.26
0.04 + -0.4x + x2 = -1.26

Factor a perfect square on the left side:
(x + -0.2)(x + -0.2) = -1.26

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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