Hello, I have been needing help for this problem for awhile. Can someone help me please?

Answer:
x = 6
Step-by-step explanation:
[tex]x = \sqrt{10 {}^{2} - 8 {}^{2} } [/tex]
[tex]x = \sqrt{100 - 64} [/tex]
[tex]x = \sqrt{36} [/tex]
[tex]x = 6[/tex]