Answer:
-434
Explanation:
If f(a) = 4 then,
f(4) = 4⁴ - 3(4)³ - 8(4)³ + 19(4) - 22
4⁴ - 3(4)³ - 8(4)³ + 19(4) - 22
256 - 3(64) - 8(64) + 19(4) - 22
256 - 192 - 512 + 76 - 22
64 - 512 + 76 - 22
-488 + 76 - 22
-412 - 22
= -434
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