Problem: If 222 is a solution (root) of x3+hx+10=0x^{3}+h x+10=0x3+hx+10=0, then h‾\underline{h}h equals:
Answer Choices:
A. 101010
B. 999
C. 222
D. −2-2−2
E. −9-9−9 Solution:
Substituting 222 for xxx, we have 23+h⋅2+10=0∴h=−92^{3}+h \cdot 2+10=0 \quad \therefore \mathrm{h}=-923+h⋅2+10=0∴h=−9 \quad