(7x^2-9x+14)-(2x^2+5x-11)=0

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Solution for (7x^2-9x+14)-(2x^2+5x-11)=0 equation:


Simplifying
(7x2 + -9x + 14) + -1(2x2 + 5x + -11) = 0

Reorder the terms:
(14 + -9x + 7x2) + -1(2x2 + 5x + -11) = 0

Remove parenthesis around (14 + -9x + 7x2)
14 + -9x + 7x2 + -1(2x2 + 5x + -11) = 0

Reorder the terms:
14 + -9x + 7x2 + -1(-11 + 5x + 2x2) = 0
14 + -9x + 7x2 + (-11 * -1 + 5x * -1 + 2x2 * -1) = 0
14 + -9x + 7x2 + (11 + -5x + -2x2) = 0

Reorder the terms:
14 + 11 + -9x + -5x + 7x2 + -2x2 = 0

Combine like terms: 14 + 11 = 25
25 + -9x + -5x + 7x2 + -2x2 = 0

Combine like terms: -9x + -5x = -14x
25 + -14x + 7x2 + -2x2 = 0

Combine like terms: 7x2 + -2x2 = 5x2
25 + -14x + 5x2 = 0

Solving
25 + -14x + 5x2 = 0

Solving for variable 'x'.

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

Divide each side by '5'.
5 + -2.8x + x2 = 0

Move the constant term to the right:

Add '-5' to each side of the equation.
5 + -2.8x + -5 + x2 = 0 + -5

Reorder the terms:
5 + -5 + -2.8x + x2 = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -2.8x + x2 = 0 + -5
-2.8x + x2 = 0 + -5

Combine like terms: 0 + -5 = -5
-2.8x + x2 = -5

The x term is -2.8x.  Take half its coefficient (-1.4).
Square it (1.96) and add it to both sides.

Add '1.96' to each side of the equation.
-2.8x + 1.96 + x2 = -5 + 1.96

Reorder the terms:
1.96 + -2.8x + x2 = -5 + 1.96

Combine like terms: -5 + 1.96 = -3.04
1.96 + -2.8x + x2 = -3.04

Factor a perfect square on the left side:
(x + -1.4)(x + -1.4) = -3.04

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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