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

来源:学生作业帮助网 编辑:六六作业网 时间:2024/05/10 11:17:43
计算:(1)(2x+5)(2x-5)-(4x+1)(x-4)(2)0.125^6*(-8)^7+(1/2-3/2)^3计算:(1)(2x+5)(2x-5)-(4x+1)(x-4)(2)0.125^6*

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

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