0
Anonymous
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
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63 +99 ___ 162
294
3097
100
91+8=99 Hope I helped. :)