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

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


Simplifying
(3x2 + -5x + 7) + -1(x2 + 2x + -3) = 0

Reorder the terms:
(7 + -5x + 3x2) + -1(x2 + 2x + -3) = 0

Remove parenthesis around (7 + -5x + 3x2)
7 + -5x + 3x2 + -1(x2 + 2x + -3) = 0

Reorder the terms:
7 + -5x + 3x2 + -1(-3 + 2x + x2) = 0
7 + -5x + 3x2 + (-3 * -1 + 2x * -1 + x2 * -1) = 0
7 + -5x + 3x2 + (3 + -2x + -1x2) = 0

Reorder the terms:
7 + 3 + -5x + -2x + 3x2 + -1x2 = 0

Combine like terms: 7 + 3 = 10
10 + -5x + -2x + 3x2 + -1x2 = 0

Combine like terms: -5x + -2x = -7x
10 + -7x + 3x2 + -1x2 = 0

Combine like terms: 3x2 + -1x2 = 2x2
10 + -7x + 2x2 = 0

Solving
10 + -7x + 2x2 = 0

Solving for variable 'x'.

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

Divide each side by '2'.
5 + -3.5x + x2 = 0

Move the constant term to the right:

Add '-5' to each side of the equation.
5 + -3.5x + -5 + x2 = 0 + -5

Reorder the terms:
5 + -5 + -3.5x + x2 = 0 + -5

Combine like terms: 5 + -5 = 0
0 + -3.5x + x2 = 0 + -5
-3.5x + x2 = 0 + -5

Combine like terms: 0 + -5 = -5
-3.5x + x2 = -5

The x term is -3.5x.  Take half its coefficient (-1.75).
Square it (3.0625) and add it to both sides.

Add '3.0625' to each side of the equation.
-3.5x + 3.0625 + x2 = -5 + 3.0625

Reorder the terms:
3.0625 + -3.5x + x2 = -5 + 3.0625

Combine like terms: -5 + 3.0625 = -1.9375
3.0625 + -3.5x + x2 = -1.9375

Factor a perfect square on the left side:
(x + -1.75)(x + -1.75) = -1.9375

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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