Steven: x=-12 x=12
Steven,
Thanks for your answer but if you do not give any explanation then Zakk cannot learn from it.
(x*x-10)+(x*x-98)=180
first, since there is only a + sign between the brackets, th bracketscan just be removed.
x
2 - 10 + x
2 -98 = 180
now add like terms
2x
2 -108 = 180
Now, because there is an x
2 term, you need to take it all to one side.
2x
2 -108 - 180 = 180 -180
2x
2 -288 = 0
x
2 - 144 = 0
x
2 =144
x = +12 or x=-12
+118608 
