Question

(x²-1 )/(x²+1) = 4/5 ​

Answer 1

Answer:

x = ±3

Step-by-step explanation:

(x²-1) ÷ (x²+1) = 4÷5

=> (x²-1)×5 = 4(x²+1)

=> 5x²-5 = 4x²+4

=> 5x² - 4 x² = 4+5

=> x² = 9

=> x = √9

=> x = ±3