Đáp án+Giải thích các bước giải:
`c)`
`(\sqrt12+2\sqrt27)\sqrt3/2-\sqrt150`
`=(\sqrt{4.3}+2\sqrt{9.3})\sqrt3/2-\sqrt{25.6}`
`=(2\sqrt3+2.3\sqrt3)\sqrt3/2-5\sqrt6`
`=(2\sqrt3+6\sqrt3)\sqrt3/2-5\sqrt6`
`=8\sqrt{3}.(\sqrt3)/2-5\sqrt6`
`=12-5\sqrt6`
`d)`
`(\sqrt18+\sqrt0,5-3\sqrt{1/3})-(\sqrt{1/8}-\sqrt75)`
`=(\sqrt{9.2}+\sqrt{1/2}-3\sqrt1/\sqrt3)-(\sqrt1/\sqrt8-\sqrt{25.3})`
`=(3\sqrt2+\sqrt2/2-\sqrt3)-(\sqrt2/4-5\sqrt3)`
`=3\sqrt2+\sqrt2/2-\sqrt3-\sqrt2/4+5\sqrt3`
`=3\sqrt2+(\sqrt2/2-\sqrt2/4)+(-\sqrt3+5\sqrt3)`
`=3\sqrt2+\sqrt2/4+4\sqrt3`
`=(3\sqrt{2}.4+\sqrt2+4\sqrt{3}.4)/4`
`=(12\sqrt2+\sqrt2+16\sqrt3)/4`
`=(13\sqrt2+16\sqrt3)/4`
