Question

If 2(x2 + 1) = 5x, find :
(i) x -1/x
(ii) x3-1/x3​

Answer 1

Answer:

you can express the given equation as :

2(x²+1)=5x

=> (x-2)(2x-1)=0 , then solve for x , you can do it yourself ,it's not very difficult.

Step-by-step explanation:

2(x²+1)=5x

or, 2x²-5x+2=0

or, 2x²-4x-x+2=0

or, 2x(x-2)-1(x-2)=0

or, (x-2)(2x-1)=0

please try next steps yourself hope it helps , you can do it.

Answer 2

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