Answer:
4=H
Step-by-step explanation:
H is unknown
180=4x7x5+2x5xH
180=140+10H
40=10H
Yes
f(x) = x³ − 9x² + 11x + 21
f(3) = (3)³ − 9(3)² + 11(3) + 21
f(3) = 27 − 81 + 33 + 21
f(3) = 0
21
are you dumb?
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