Question

if x^2-1/x+1=4 , x?
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Answer 1

Answer:

x²-1/x+1=4

=>x²-1=4(x+1)

=>x²-1=4x+4

=>x²-4x=4+1

=>x²-4x-5=0

=>x²+x-5x-5=0

=>x(x+1)-5(x+1)=0

=>(x+1)(x-5)=0

=>(x+1)=0 or x-5=0

=>x= -1 (not possible) or x=5

the answer x=5

Answer 2

Answer:

x = 5, -1

Step-by-step explanation:

x² - 1/ x+1 = 4

x² -1 = 4 (x+1)

x² -1 = 4x + 1

-1 -4 = 4x - x²

  -5 = 4x - x²

    0 = 4x - x² +5

Then set each factor equal to zero.

x = 5, -1

Hope it was helpful!