(1)
(根号48+根号18)乘(2-二倍的根号3)-(根号3-根号2)的二次方
=(4倍根号3+3倍根号2)*(2-根号3)-(3+2-2倍根号6)
=8倍根号3+6倍根号2 - 12- 3倍根号6-5+2倍根号6
=8倍根号3+6倍根号2 - 17-根号6
(2)
根号48-根号54÷根号2+(3-根号3)乘(3+根号3)
=4倍根号3- 3倍根号3 + (3^2-3)
=根号3+6
=6+根号3
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(1)
(根号48+根号18)乘(2-二倍的根号3)-(根号3-根号2)的二次方
=(4倍根号3+3倍根号2)*(2-根号3)-(3+2-2倍根号6)
=8倍根号3+6倍根号2 - 12- 3倍根号6-5+2倍根号6
=8倍根号3+6倍根号2 - 17-根号6
(2)
根号48-根号54÷根号2+(3-根号3)乘(3+根号3)
=4倍根号3- 3倍根号3 + (3^2-3)
=根号3+6
=6+根号3
不懂可追问,望采纳!