3x² - 9x + 6 = ____?
- 3(x - 1)(x + 2)
- 3(x - 1)(x - 2)
- 3(x + 1)(x - 2)
- None of these
Explanation
Factorize the quadratic expression.
3x^2 - 9x + 6 = 3(x^2 - 3x + 2)
= 3(x^2 - 2x - x + 2)
= 3(x(x - 2) - 1(x - 2))
= 3(x - 1)(x - 2)
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