2x^2-7x+9=(x-3)(x+1)-3x

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Solution for 2x^2-7x+9=(x-3)(x+1)-3x equation:


Simplifying
2x2 + -7x + 9 = (x + -3)(x + 1) + -3x

Reorder the terms:
9 + -7x + 2x2 = (x + -3)(x + 1) + -3x

Reorder the terms:
9 + -7x + 2x2 = (-3 + x)(x + 1) + -3x

Reorder the terms:
9 + -7x + 2x2 = (-3 + x)(1 + x) + -3x

Multiply (-3 + x) * (1 + x)
9 + -7x + 2x2 = (-3(1 + x) + x(1 + x)) + -3x
9 + -7x + 2x2 = ((1 * -3 + x * -3) + x(1 + x)) + -3x
9 + -7x + 2x2 = ((-3 + -3x) + x(1 + x)) + -3x
9 + -7x + 2x2 = (-3 + -3x + (1 * x + x * x)) + -3x
9 + -7x + 2x2 = (-3 + -3x + (1x + x2)) + -3x

Combine like terms: -3x + 1x = -2x
9 + -7x + 2x2 = (-3 + -2x + x2) + -3x

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

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

Solving
9 + -7x + 2x2 = -3 + -5x + x2

Solving for variable 'x'.

Reorder the terms:
9 + 3 + -7x + 5x + 2x2 + -1x2 = -3 + -5x + x2 + 3 + 5x + -1x2

Combine like terms: 9 + 3 = 12
12 + -7x + 5x + 2x2 + -1x2 = -3 + -5x + x2 + 3 + 5x + -1x2

Combine like terms: -7x + 5x = -2x
12 + -2x + 2x2 + -1x2 = -3 + -5x + x2 + 3 + 5x + -1x2

Combine like terms: 2x2 + -1x2 = 1x2
12 + -2x + 1x2 = -3 + -5x + x2 + 3 + 5x + -1x2

Reorder the terms:
12 + -2x + 1x2 = -3 + 3 + -5x + 5x + x2 + -1x2

Combine like terms: -3 + 3 = 0
12 + -2x + 1x2 = 0 + -5x + 5x + x2 + -1x2
12 + -2x + 1x2 = -5x + 5x + x2 + -1x2

Combine like terms: -5x + 5x = 0
12 + -2x + 1x2 = 0 + x2 + -1x2
12 + -2x + 1x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
12 + -2x + 1x2 = 0

Begin completing the square.

Move the constant term to the right:

Add '-12' to each side of the equation.
12 + -2x + -12 + x2 = 0 + -12

Reorder the terms:
12 + -12 + -2x + x2 = 0 + -12

Combine like terms: 12 + -12 = 0
0 + -2x + x2 = 0 + -12
-2x + x2 = 0 + -12

Combine like terms: 0 + -12 = -12
-2x + x2 = -12

The x term is -2x.  Take half its coefficient (-1).
Square it (1) and add it to both sides.

Add '1' to each side of the equation.
-2x + 1 + x2 = -12 + 1

Reorder the terms:
1 + -2x + x2 = -12 + 1

Combine like terms: -12 + 1 = -11
1 + -2x + x2 = -11

Factor a perfect square on the left side:
(x + -1)(x + -1) = -11

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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