计算①[(x+2y)^2]^4*(x+2y)^2 ②3^14*(-1/9)^7
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计算①[(x+2y)^2]^4*(x+2y)^2②3^14*(-1/9)^7计算①[(x+2y)^2]^4*(x+2y)^2②3^14*(-1/9)^7计算①[(x+2y)^2]^4*(x+2y)^2
计算①[(x+2y)^2]^4*(x+2y)^2 ②3^14*(-1/9)^7
计算①[(x+2y)^2]^4*(x+2y)^2 ②3^14*(-1/9)^7
计算①[(x+2y)^2]^4*(x+2y)^2 ②3^14*(-1/9)^7
[(x+2y)^2]^4*(x+2y)^2
=(x+2y)^8×(x+2y)^2
=(x+2y)^10
3^14*(-1/9)^7
=9^7×(-1/9)^7
=[9×(-1/9)]^7
=(-1)^7
=-1
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