Which expression in factored form is equivalent to 4(x² - 2x) - 2(x² -3)?
1) 4x² - 8x - 2x² + 6
2) 4x² - 8x + 2x² - 6
3) 4x² - 8x - 2x² - 6
4) 4x² - 8x + 2x² + 6