Question

find the value of x in the equation x+1/x=4​

Answer 1

Answer:

Option A

Step-by-step explanation:

1) When x=1,

∣a∣=4

a=±4

2) When x>1

∣x−1+a∣=4

x−1+a=4

x=5−a

5−a>1

a<4

3) When x<1,

−x+1−a=4

x=−a−3

−a−3>1

a<−4

Hence, option A is correct.

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Answer 2

In mathematics, a multiplicative inverse or reciprocal for a number x, denoted by 1/x or x−1, is a number which when multiplied by x yields the multiplicative identity, 1. The multiplicative inverse of a fraction a/b is b/a. For the multiplicative inverse of a real number, divide 1 by the number

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