ihmzholskylopo
ihmzholskylopo
07-04-2016
Mathematics
contestada
describe how to solve 81m^2-25
Respuesta :
apologiabiology
apologiabiology
07-04-2016
we can solve if it is equal to zero (it could be equalt to 12031923 for all we know)
I can say how to factor though
difference of 2 perfect squares
if yo have
a^2-b^2 then that equals (a-b)(a+b)
81m^2=(9m)^2
25=5^2
tehrfor
(9m)^2-(5)^2=(9m-5)(9m+5)
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