I need so help on this I don’t know how to do it.

Answer:
=−3928
Step-by-step explanation:
((−4)(−5))^22(−7)−14(14−5)^2+6
=(20^2)(−7)−14(14−5)^2+6
=(400)(−7)−14(14−5)^2+6
=−2800−14(14−5)^2+6
=−2800−14(9^2)+6
=−2800−(14)(81)+6
=−2800−1134+6
=−3934+6
=−3928