use the Phythagorean theorem to
find the length of the third side

Answer:
[tex]x = 2 \sqrt{6} [/tex]
Step-by-step explanation:
by using pythagorus theorem,
=》
[tex] {x}^{2} = {7}^{2} - {5}^{2} [/tex]
=》
[tex] {x}^{2} = 49 - 25[/tex]
=》
[tex] {x}^{2} = 24[/tex]
=》
[tex]x = \sqrt{24} [/tex]
=》
[tex]x = 2 \sqrt{6} [/tex]