If $$\(x^{2}+x+1=18\)$$, then the average of $$\(x^{3}, x^{2}\)$$, and $$\(x\)$$ is
A.
\(6 x\)
B.
\(9 x\)
C.
\(18 x\)
D.
\(36 x\)
Exam No：2021 First Round Grade 7 Year：2021 Question No：28
Answer:
A
Knowledge points:
G7 - Algebra - Multi-Step Linear Equations
Solution:
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