Can someone help me with these two problems and show work please !!

Answer:
First answer is 9 or 1 . Second answer is 7 or -7.
Step-by-step explanation:
[tex](x-5)^{2} =16[/tex]
[tex]x-5 = 4[/tex] or [tex]x - 5 =-4[/tex]
so [tex]x = 9[/tex] or [tex]x = 1[/tex]
[tex]2x^{2} = 98[/tex]
[tex]x^{2} =49[/tex]
[tex]x=7[/tex] or [tex]x = -7[/tex]