根号[(9a^4)+(36a^2b^2)]
问题描述:
根号[(9a^4)+(36a^2b^2)]
化简
答
=根号[(9a^2)(a^2+4b^2)]=3a根号[a^2+4b^2]
根号[(9a^4)+(36a^2b^2)]
化简
=根号[(9a^2)(a^2+4b^2)]=3a根号[a^2+4b^2]