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)^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

①[(x+2y)^2]^4*(x+2y)^2
=(x+2y)^8*(x+2y)^2
=(x+2y)^10

②3^14*（-1/9）^7
=-1/3^14*3^14
=-(1/3*3)^14
=-1

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

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