Question

(5^4*3^3-5^3*3^2+5^2*3)/15 这题怎么做!急!请把思考过程也写下来

Answer 1

(5^4*3^3-5^3*3^2+5^2*3)/15

=5*3(5^3*3^2-5^2*3+5)/15

=5^3*3^2-5^2*3+5

=1125-75+5

=1055