الاجابة
f(8) – (1/8)(8)4 – (3/2)(8)3 + 12(8) – 18
f(8) = 512 – 768+96-18 = -178
f(-2) = (1/8)(-2)4 – (3/2)(-2)3 +12(-2) -18
f(-2) = 2 + 12 – 24 – 18 = -28