(1) 0.75^x+0.4375=1(2) 2^2x+3-2^2x+1=192(3) (-0.125)^2 × 2^74.(-0.5)^101 × 2^5 × 2^1005.(-a^4)^3-(-a^2)^4+(-a^2)^6-a×(-a)^3 ×(-a^2)^4^后面的数字表示指数.
问题描述：
(1) 0.75^x+0.4375=1
(2) 2^2x+3-2^2x+1=192
(3) (-0.125)^2 × 2^7
4.(-0.5)^101 × 2^5 × 2^100
5.(-a^4)^3-(-a^2)^4+(-a^2)^6-a×(-a)^3 ×(-a^2)^4
^后面的数字表示指数.
答
(1) 0.75^x+0.4375=1
0.75^x=0.5625
X=2
(2) 2^2x+3-2^2x+1=192
2^2x+1*(4-1)=192
2^2x+1=64
2X+1=6
X=2.5
(3) (-0.125)^2 × 2^7 =(0.125)^2 × 2^7= (1/8)^2 × 2^7=
=2^(-6)*2^7=2
4.(-0.5)^101 × 2^5 × 2^100 =- (1/2)^101 × 2^5 × 2^100
=-2^(-101) × 2^5 × 2^100 =-2^4=-16
5.(-a^4)^3+(-a^2)^6-a×(-a)^3 ×(-a^2)^4
=-(a^4)^3-(a^2)^4+(a^2)^6+a×a^3 ×(a^2)^4
=-a^12-a^8+a^12+a^12
=a^12-a^8这个题没出错的话就是这个答案
(-a^2)^4好像应该是(-a^3)^4答案就是0.