4x(2x-1)=(x+7)(x-2)

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Solution for 4x(2x-1)=(x+7)(x-2) equation:


Simplifying
4x(2x + -1) = (x + 7)(x + -2)

Reorder the terms:
4x(-1 + 2x) = (x + 7)(x + -2)
(-1 * 4x + 2x * 4x) = (x + 7)(x + -2)
(-4x + 8x2) = (x + 7)(x + -2)

Reorder the terms:
-4x + 8x2 = (7 + x)(x + -2)

Reorder the terms:
-4x + 8x2 = (7 + x)(-2 + x)

Multiply (7 + x) * (-2 + x)
-4x + 8x2 = (7(-2 + x) + x(-2 + x))
-4x + 8x2 = ((-2 * 7 + x * 7) + x(-2 + x))
-4x + 8x2 = ((-14 + 7x) + x(-2 + x))
-4x + 8x2 = (-14 + 7x + (-2 * x + x * x))
-4x + 8x2 = (-14 + 7x + (-2x + x2))

Combine like terms: 7x + -2x = 5x
-4x + 8x2 = (-14 + 5x + x2)

Solving
-4x + 8x2 = -14 + 5x + x2

Solving for variable 'x'.

Reorder the terms:
14 + -4x + -5x + 8x2 + -1x2 = -14 + 5x + x2 + 14 + -5x + -1x2

Combine like terms: -4x + -5x = -9x
14 + -9x + 8x2 + -1x2 = -14 + 5x + x2 + 14 + -5x + -1x2

Combine like terms: 8x2 + -1x2 = 7x2
14 + -9x + 7x2 = -14 + 5x + x2 + 14 + -5x + -1x2

Reorder the terms:
14 + -9x + 7x2 = -14 + 14 + 5x + -5x + x2 + -1x2

Combine like terms: -14 + 14 = 0
14 + -9x + 7x2 = 0 + 5x + -5x + x2 + -1x2
14 + -9x + 7x2 = 5x + -5x + x2 + -1x2

Combine like terms: 5x + -5x = 0
14 + -9x + 7x2 = 0 + x2 + -1x2
14 + -9x + 7x2 = x2 + -1x2

Combine like terms: x2 + -1x2 = 0
14 + -9x + 7x2 = 0

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

Divide each side by '7'.
2 + -1.285714286x + x2 = 0

Move the constant term to the right:

Add '-2' to each side of the equation.
2 + -1.285714286x + -2 + x2 = 0 + -2

Reorder the terms:
2 + -2 + -1.285714286x + x2 = 0 + -2

Combine like terms: 2 + -2 = 0
0 + -1.285714286x + x2 = 0 + -2
-1.285714286x + x2 = 0 + -2

Combine like terms: 0 + -2 = -2
-1.285714286x + x2 = -2

The x term is -1.285714286x.  Take half its coefficient (-0.642857143).
Square it (0.4132653063) and add it to both sides.

Add '0.4132653063' to each side of the equation.
-1.285714286x + 0.4132653063 + x2 = -2 + 0.4132653063

Reorder the terms:
0.4132653063 + -1.285714286x + x2 = -2 + 0.4132653063

Combine like terms: -2 + 0.4132653063 = -1.5867346937
0.4132653063 + -1.285714286x + x2 = -1.5867346937

Factor a perfect square on the left side:
(x + -0.642857143)(x + -0.642857143) = -1.5867346937

Can't calculate square root of the right side.

The solution to this equation could not be determined.

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