Answer:
21x² - 52x + 12 = 0
Explanation:
3x[3-x-2(x-3)] = (3x-4)(4x-3)
3x(3-x-2x+6) = 12x²-9x-16x+12
3x(9-3x) = 12x²-25x+12
27x-9x² = 12x²-25x+12
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