Question

if 3x - 4/x = 4 find 27x^3 -64/x^3​

Answer 1

Answer:

3x - 4/x = 4 find 27x^3 -64/x^3

solve

3x - 4/x = 4

3x^2 - 4/x = 4

3x^2 - 4 = 4x

3x^2 -4x- 4=0

3x^2 -6x+2x- 4=0

3x(x-2) +2(x-2) =0

(3x+2) (x-2)=0

x-2=0

x=2 putting this value is 27x^3 -64/x^3

216-64/8=0

216-8=0

208= ans

Step-by-step explanation:

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