一道计算题(化简)(a²+9)²-(a+3)(3-a)(a²+9)运用公式化简,
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一道计算题(化简)(a²+9)²-(a+3)(3-a)(a²+9)运用公式化简,
一道计算题(化简)
(a²+9)²-(a+3)(3-a)(a²+9)运用公式化简,
一道计算题(化简)(a²+9)²-(a+3)(3-a)(a²+9)运用公式化简,
(a²+9)²-(a+3)(3-a)(a²+9)
=(a²+9)²+(a+3)(a-3)(a²+9)
=(a²+9)²+(a²-9)(a²+9)
=(a²+9)(a²+9+a²-9)
=(a²+9)2a²
=2a^4+18a²
(a²+9)²-(a+3)(3-a)(a²+9)
=(a²+9)[(a²+9)+(a²-9)]
=2a²(a²+9)
(a²+9)²-(a+3)(3-a)(a²+9)
= (a²+9)²+(a²-9)(a²+9)
=a^4+18a^2+81+(a^4-81)
=2a^4+18a^2
=(a^2+9)-(9-a^2)(a^2+9)
=(a^2+9)(a^2+9-9+a^2)
=(a^2+9)x2a^2
=2a^4+18a^2
(a²+9)²-(a+3)(3-a)(a²+9)
=(a^2+9)(a^2+9-9+a^2)
=(a^2+9)*2a^2
=2a^2(a^2+9)