Question

Please answer it fast

Answer 1

Step-by-step explanation:

x^-1/2=log base 18 (√2+√8)

x^-1/2=log base 18 (√2+2√2)

x^-1/2=log base 18 (3√2)

3√2 can be written as √18

x^-1/2=log base 18 (√18)

x^-1/2=1/2

squaring on both sides

x^-1=1/4

x=4