√2-3的平方+(√2+1)(√2+5)

问题描述:

√2-3的平方+(√2+1)(√2+5)

原式=2-6√2+9+2+5√2+√2+5
=18

22

(√2-3)²+(√2+1)(√2+5)
=2-6√2+9+2+6√2+5
=4+14
=18