Question

Describe how to solve 81m^2-25

Answer 1

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)