Question

幂的乘方与积的乘方.(-4xy^3)×(-xy)+(-3xy^2)^2 a^3×(-a)

Answer 1

(-4xy^3)×(-xy)+(-3xy^2)^2

=4x^2y^4+9x^2y^4

=13x^2y^4

a^3×(-a)^5×(-3a)^2×(-7ab^3)

=a^3×a^5×9a^2×7ab^3

=63a^11b^3

2(x^3)^2×x^3-(3x^3)^3+(5x)^2×x^7

=2x^9-9x^9+25x^9

=18x^9

如果本题有什么不明白可以追问,