$\frac{775×775×775+225×225×225}{77.5×77.5+22.5×22.5-77.5×22.5}$ is equal to :

100 10000 100000 0.1

100000

a3 + b3 = ( a + b ) ( a2 + b2 - ab ) ( a + b ) = \(\frac{a^3 + b^3}{a^2 + b^2 - ab }\) We can use this method = \(\frac{1}{0.01}\) = 100, Take 100 as common then write in this form \(\frac{ a^3 + b^3}{ a^2 + b^2 - ab }\)  = a + b 100(775 + 225) = 100000