Question

x+√(x²-9)=4. then. x-√(x²-9)=?​

Answer 1

Step-by-step explanation:

may this help you

Answer 2

Answer:

x-√(x^2 - 9) = 18/8 = 9/4

Step-by-step explanation:

x+√(x^2 - 9) = 4

=> √(x^2 - 9) = 4-x

=> x^2 - 9 = (4-x)^2

=> x^2 - 9 = x^2 +16 - 8x

=> 8x = 25

=> x = 25/8

x-√(x^2 - 9)

= 25/8 - √(625/64 - 9)

= 25/8 - √(49/64)

= 25/8 - 7/8

= 18/8 =9/4