2x-3/x =5 then x3-1/x3 is equal to
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Answer: 63/8
728/27
Step-by-step explanation:
2X-3/X=5
2x²-3=5x
2x²-5x-3=0
2x²-6x+x-3=0
2x(x-3)+1(x-3)=0
(2x+1)(x-3)=0
x= -1/2 x=3
put x=3
3³-1/3³
27-1/27
729-1/27
728/27
put x= -1/2
(-1/2)³-1/(-1/2)³
(-1/8)-(-8)
(-1/8)+8
(-1+64)/8
63/8
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