Question

急啊啊！！。。（5的四次方*3的立方-5的三次方*3的平方+5的平方*3）/15

。。要有详细步骤、3Q~

Answer 1

(5的四次方*3的立方-5的三次方*3的平方+5的平方*3）/15
=5×3×(5^3×3^2-5^2×3+5)/15
=5^3×3^2-5^2×3+5
=5(15^2-15+1)
=5×211=1055

Answer 2

1055

Answer 3

(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
=5(15^2-15+1)
=5×211
=1055