w2+2w=99
w2+2w-99=0 (quadratic equation)
Find two number that multiply to get 99 and add to get 2
The numbers are 11 and -9
soooo.
(w-9) (w+11)=0
w-9=0 w+11=0
w= 9 w=-11
199 + 199 + 199 + 199 + 99 + 99 + 99 = 1192
63 +99 ___ 162
equals 99
2 + 5 + 9 + 99 = 115
294
3097
v2+36v+99 = (v+3)(v+33) when factored
104
122
100
91+8=99 Hope I helped. :)
1 + 0 + 9098888 - 83 - 99 = 9,098,707