To solve first move the 98 to the other side by subtracting it from both sides. Then divide by - 1 on both sides to that the x^2 is no longer a negative. You are left with:
[tex] x^{2} = 98[/tex]
Now square root both sides to get
[tex]x = +/- \sqrt{98} [/tex]
The two factors that make up 98 are 49 and 2. 49 can be square rooted. So we are left with these answers:
[tex]x = - 7 \sqrt{2} [/tex] and [tex]x = 7 \sqrt{2} [/tex]
