Question

simplify [ 3 + 5/x ] [ 9 - 15/x + 25/x raised to 2 ]

Answer 1

Answer:

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Step-by-step explanation:

(3+5/x)(3^2-3x5/x+(5/x)^2

a=3

b=5/x

(a+b)(a^2-ab+b^2)=a^3+b^3

(3)^3+(5/x)^3=27+125/x^2