计算：(1)(2x+5)(2x-5)-(4x+1)(x-4) (2)0.125^6*(-8)^7+(1/2-3/2)^3_数学解答

计算：(1)(2x+5)(2x-5)-(4x+1)(x-4) (2)0.125^6*(-8)^7+(1/2-3/2)^3

人气：382 ℃　时间：2020-05-08 02:32:08

解答

(1)(2x+5)(2x-5)-(4x+1)(x-4)
=4x²-25-4x²+15x+4
=15x-25
(2)0.125^6*(-8)^7+(1/2-3/2)^3
=[0.125*(-8)]^6*(-8)+(-1)³
=-8-1
=-9