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问题: 计算与化简(请写出过程)

(1)(√28+√7-2√3)*√7+√84
(2)(-3)^-2+√8-11-2√21-(√6-3)^0

解答:

(1)(√28+√7-2√3)*√7+√84
=14+7-2√21+√84
=21
(2)(-3)^-2+√8-11-2√21-(√6-3)^0
=1/9+2√2-11-2√21-1
=109/9+2√2-2√21