作业帮初一的数学题【计算题】1.-[a+b]^5*[a+b]^22.a^2n+1*a^2n-13.10^4*10^÷10^-24.[1/7]^0÷[-1/7]^-15.[x+2y+3z][x+2y-3z]
来源：学生作业帮助网 编辑：作业帮 时间：2024/05/09 05:31:36
![初一的数学题【计算题】1.-[a+b]^5*[a+b]^22.a^2n+1*a^2n-13.10^4*10^÷10^-24.[1/7]^0÷[-1/7]^-15.[x+2y+3z][x+2y-3z]](/uploads/image/z/244521-9-1.jpg?t=%E5%88%9D%E4%B8%80%E7%9A%84%E6%95%B0%E5%AD%A6%E9%A2%98%E3%80%90%E8%AE%A1%E7%AE%97%E9%A2%98%E3%80%911.-%5Ba%2Bb%5D%5E5%2A%5Ba%2Bb%5D%5E22.a%5E2n%2B1%2Aa%5E2n-13.10%5E4%2A10%5E%C3%B710%5E-24.%5B1%2F7%5D%5E0%C3%B7%5B-1%2F7%5D%5E-15.%5Bx%2B2y%2B3z%5D%5Bx%2B2y-3z%5D)
初一的数学题【计算题】1.-[a+b]^5*[a+b]^22.a^2n+1*a^2n-13.10^4*10^÷10^-24.[1/7]^0÷[-1/7]^-15.[x+2y+3z][x+2y-3z]
初一的数学题【计算题】
1.-[a+b]^5*[a+b]^2
2.a^2n+1*a^2n-1
3.10^4*10^÷10^-2
4.[1/7]^0÷[-1/7]^-1
5.[x+2y+3z][x+2y-3z]
初一的数学题【计算题】1.-[a+b]^5*[a+b]^22.a^2n+1*a^2n-13.10^4*10^÷10^-24.[1/7]^0÷[-1/7]^-15.[x+2y+3z][x+2y-3z]
1.-[a+b]^5*[a+b]^2
=-(a+b)^(2+5)
=-(a+b)^7
2.a^2n+1*a^2n-1
=a^(2n+1+2n-1)
=a^4n
3.10^4*10^÷10^-2
=10^(4+2-(-2))
=10^8
4.[1/7]^0÷[-1/7]^-1
=1÷(-7)
=-1/7
5.[x+2y+3z][x+2y-3z]
=(x+2y)²-(3z)²
=x²+4xy+4y²-9z²