expand ( 3x-1/2x^2)^3
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Answer:
-x^6/8 + 9x^5/4 - 27x^4/2 + 27x^3
Step-by-step explanation:
( 3x-1/2x^2)^3
= (3x^2) - (x^2/2)^3 - 3(3x)^2 X x^2/2 + 3 X 3x(x^2/2)^2
= 27x^3 - x^6/8 - 27x^4/2 + 9x^5/4
= -x^6/8 + 9x^5/4 - 27x^4/2 + 27x^3
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