Question 8.If x=3/2, then the value of 27x3-54x2+36x-11 is
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Answer:12.635
Step-by-step explanation:
27x^3 - 54x^2+ 36x - 11
=27(3/2)^3 - 54(3/2)^2 + 36(3/2) - 11
=27*27/8 - 54*9/4 + 108/2 - 11
= 729/8 - 243/2 + 54 - 11
= (729-972)/8 + 43
= - 243/8 + 43
= (-243+344)/8
= 101 / 8
= 12.625
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