If x = 2 + √2 , find the value of 18x – x^2 – x^3 .
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Answered by
0
Answer:
no idea
Step-by-step explanation:
Answered by
5
Answer:
10
Step-by-step explanation:
18x=36+18√2
x^2=6+4√2
x^3=20+14√2
18x-x^2-x^3
=36+18√2-6-4√2-20-14√2
=10
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