(-5.25)x(-4.73)-4.73x(-19.75)-25x(-5.27)怎么求?_数学解答

(-5.25)x(-4.73)-4.73x(-19.75)-25x(-5.27)怎么求?

人气：146 ℃　时间：2020-04-09 06:13:59

解答

(-5.25)*(-4.73)-4.73*(-19.75)-25*(-5.27)
=(-4.73)*[-5.25+(-19.75)]-25*(-5.27)
=(-4.73)*(-25)+(-25)*(-5.27)
=(-25)*(-10)
=250