Question

计算(1)2abc^2*(-1\3a^2b^3cx)=?(2)(-2ab)^3*(-a^2c)*3ab^2=

Answer 1

(1)2abc^2*(-13a^2b^3cx)

=-2/3a^3b^4c^3 x

(2)(-2ab)^3*(-a^2c)*3ab^2=

=-8a^3b^3*(-a^2c)*3ab^2

=24a^6b^5c

（3）0.04^997*（（-5）^997）^2=

=0.04^997 ×25^997

=(0.04×25)^997

=1