Answer:
56x² + 6x - 36
Step-by-step explanation:
(8x-6)(7x+6) = 8x*(7x + 6) - 6*(7x + 6)
= 8x*7x + 8x*6 - 6*7x - 6*6
=56x² + 48x - 42x - 36
= 56x² + 6x - 36