计算(a-9/1b^)(3a+3b^)(3a^+37/1b^4)
问题描述:
计算(a-9/1b^)(3a+3b^)(3a^+37/1b^4)
答
(a-b²/9)(3a+3b²)(3a²+b⁴/37)=(3a²+3ab²-ab²/3-b⁴/3)(3a²+b⁴/37)=(3a²+8ab²/3-b⁴/3)(3a²+b⁴/37)=9a⁴+3a²b⁴/37...