化简.(1)√ 5+2√ 5×√ 2+2(2)√ 7+4√ 3

问题描述:

化简.
(1)√ 5+2√ 5×√ 2+2
(2)√ 7+4√ 3

√ 5+2√ 5×√ 2+2
=√ 5+2√ 10+2
√ 7+4√ 3
=√ 7+4√ 3