5p² - (4p - 3)(3p + 2) = ?

Question: 5p² - (4p - 3)(3p + 2) = ?

Solution:
5p2 - (4p - 3) (3p + 2)
= 5p2 - {(4p × 3p) + (4p × 2) - (3 × 3p) - (3 × 2)}
= 5p² - (12p² + 8p - 9p - 6)
= 5p² - (12p² - p - 6)
= 5p2 - 12p² + p + 6
= - 7p² + p + 6