求 (3a^2)*(a^4)+(2a)*(a^2)*(a^4)-(4a^5)*a^2 的值是不是这样:原式=3*(a^2)*(a^4)+2*a*(a^2)*(a^4)-4*(a^5)*a^2=3*(a^6)+2*(a^7)-4*(a^7)=3a^6-2a^7

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求 (3a^2)*(a^4)+(2a)*(a^2)*(a^4)-(4a^5)*a^2 的值是不是这样:原式=3*(a^2)*(a^4)+2*a*(a^2)*(a^4)-4*(a^5)*a^2=3*(a^6)+2*(a^7)-4*(a^7)=3a^6-2a^7
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求 (3a^2)*(a^4)+(2a)*(a^2)*(a^4)-(4a^5)*a^2 的值是不是这样:原式=3*(a^2)*(a^4)+2*a*(a^2)*(a^4)-4*(a^5)*a^2=3*(a^6)+2*(a^7)-4*(a^7)=3a^6-2a^7
求 (3a^2)*(a^4)+(2a)*(a^2)*(a^4)-(4a^5)*a^2 的值
是不是这样:
原式=3*(a^2)*(a^4)+2*a*(a^2)*(a^4)-4*(a^5)*a^2
=3*(a^6)+2*(a^7)-4*(a^7)
=3a^6-2a^7

求 (3a^2)*(a^4)+(2a)*(a^2)*(a^4)-(4a^5)*a^2 的值是不是这样:原式=3*(a^2)*(a^4)+2*a*(a^2)*(a^4)-4*(a^5)*a^2=3*(a^6)+2*(a^7)-4*(a^7)=3a^6-2a^7
(3a^2)*(a^4)+(2a)*(a^2)*(a^4)-(4a^5)*a^2
=3a^6+2a^7-4a^7
=3a^6-2a^7