((2x-9)*(2x-9))+(3x*3x)=((5x-21)*(5x-21))

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Solution for ((2x-9)*(2x-9))+(3x*3x)=((5x-21)*(5x-21)) equation:


Simplifying
((2x + -9)(2x + -9)) + (3x * 3x) = ((5x + -21)(5x + -21))

Reorder the terms:
((-9 + 2x)(2x + -9)) + (3x * 3x) = ((5x + -21)(5x + -21))

Reorder the terms:
((-9 + 2x)(-9 + 2x)) + (3x * 3x) = ((5x + -21)(5x + -21))

Multiply (-9 + 2x) * (-9 + 2x)
((-9(-9 + 2x) + 2x * (-9 + 2x))) + (3x * 3x) = ((5x + -21)(5x + -21))
(((-9 * -9 + 2x * -9) + 2x * (-9 + 2x))) + (3x * 3x) = ((5x + -21)(5x + -21))
(((81 + -18x) + 2x * (-9 + 2x))) + (3x * 3x) = ((5x + -21)(5x + -21))
((81 + -18x + (-9 * 2x + 2x * 2x))) + (3x * 3x) = ((5x + -21)(5x + -21))
((81 + -18x + (-18x + 4x2))) + (3x * 3x) = ((5x + -21)(5x + -21))

Combine like terms: -18x + -18x = -36x
((81 + -36x + 4x2)) + (3x * 3x) = ((5x + -21)(5x + -21))
(81 + -36x + 4x2) + (3x * 3x) = ((5x + -21)(5x + -21))

Remove parenthesis around (81 + -36x + 4x2)
81 + -36x + 4x2 + (3x * 3x) = ((5x + -21)(5x + -21))

Reorder the terms for easier multiplication:
81 + -36x + 4x2 + (3 * 3x * x) = ((5x + -21)(5x + -21))

Multiply 3 * 3
81 + -36x + 4x2 + (9x * x) = ((5x + -21)(5x + -21))

Multiply x * x
81 + -36x + 4x2 + (9x2) = ((5x + -21)(5x + -21))

Combine like terms: 4x2 + (9x2) = 13x2
81 + -36x + 13x2 = ((5x + -21)(5x + -21))

Reorder the terms:
81 + -36x + 13x2 = ((-21 + 5x)(5x + -21))

Reorder the terms:
81 + -36x + 13x2 = ((-21 + 5x)(-21 + 5x))

Multiply (-21 + 5x) * (-21 + 5x)
81 + -36x + 13x2 = ((-21(-21 + 5x) + 5x * (-21 + 5x)))
81 + -36x + 13x2 = (((-21 * -21 + 5x * -21) + 5x * (-21 + 5x)))
81 + -36x + 13x2 = (((441 + -105x) + 5x * (-21 + 5x)))
81 + -36x + 13x2 = ((441 + -105x + (-21 * 5x + 5x * 5x)))
81 + -36x + 13x2 = ((441 + -105x + (-105x + 25x2)))

Combine like terms: -105x + -105x = -210x
81 + -36x + 13x2 = ((441 + -210x + 25x2))
81 + -36x + 13x2 = (441 + -210x + 25x2)

Remove parenthesis around (441 + -210x + 25x2)
81 + -36x + 13x2 = 441 + -210x + 25x2

Solving
81 + -36x + 13x2 = 441 + -210x + 25x2

Solving for variable 'x'.

Reorder the terms:
81 + -441 + -36x + 210x + 13x2 + -25x2 = 441 + -210x + 25x2 + -441 + 210x + -25x2

Combine like terms: 81 + -441 = -360
-360 + -36x + 210x + 13x2 + -25x2 = 441 + -210x + 25x2 + -441 + 210x + -25x2

Combine like terms: -36x + 210x = 174x
-360 + 174x + 13x2 + -25x2 = 441 + -210x + 25x2 + -441 + 210x + -25x2

Combine like terms: 13x2 + -25x2 = -12x2
-360 + 174x + -12x2 = 441 + -210x + 25x2 + -441 + 210x + -25x2

Reorder the terms:
-360 + 174x + -12x2 = 441 + -441 + -210x + 210x + 25x2 + -25x2

Combine like terms: 441 + -441 = 0
-360 + 174x + -12x2 = 0 + -210x + 210x + 25x2 + -25x2
-360 + 174x + -12x2 = -210x + 210x + 25x2 + -25x2

Combine like terms: -210x + 210x = 0
-360 + 174x + -12x2 = 0 + 25x2 + -25x2
-360 + 174x + -12x2 = 25x2 + -25x2

Combine like terms: 25x2 + -25x2 = 0
-360 + 174x + -12x2 = 0

Factor out the Greatest Common Factor (GCF), '6'.
6(-60 + 29x + -2x2) = 0

Factor a trinomial.
6((-12 + x)(5 + -2x)) = 0

Ignore the factor 6.

Subproblem 1

Set the factor '(-12 + x)' equal to zero and attempt to solve: Simplifying -12 + x = 0 Solving -12 + x = 0 Move all terms containing x to the left, all other terms to the right. Add '12' to each side of the equation. -12 + 12 + x = 0 + 12 Combine like terms: -12 + 12 = 0 0 + x = 0 + 12 x = 0 + 12 Combine like terms: 0 + 12 = 12 x = 12 Simplifying x = 12

Subproblem 2

Set the factor '(5 + -2x)' equal to zero and attempt to solve: Simplifying 5 + -2x = 0 Solving 5 + -2x = 0 Move all terms containing x to the left, all other terms to the right. Add '-5' to each side of the equation. 5 + -5 + -2x = 0 + -5 Combine like terms: 5 + -5 = 0 0 + -2x = 0 + -5 -2x = 0 + -5 Combine like terms: 0 + -5 = -5 -2x = -5 Divide each side by '-2'. x = 2.5 Simplifying x = 2.5

Solution

x = {12, 2.5}

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