Simplify the expression 3x(x – 12x) + 3x2 – 2(x – 2)2.
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Answer:
3x(x) + 3x(- 12x) + 3x2 -2[x(2) - 2(2)]
3x² - 36x² + 6 - 2[2x - 4]
3x² - 36x² + 6 - 2(2x) -2(-4)
- 33x² + 6 - 4x + 8
- 33x² + 6 + 8 - 4x
- 33x² + 14 - 4x
- 33x² - 4x + 14
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(1, 3, 4) or (a, c, d)
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