14+5√3
=(56+20√3)/4
=(50+2√300+6)/4
=(√50+√6)²/4
=[(5√2+√6)/2]²
x=8+4√3
=6+2√12+2
=(√6+√2)²
x-1=7+4√3
=4+2√12+3
=(2+√3)²
所以原式=√6+√2-2-√3
14+5√3
=(56+20√3)/4
=(50+2√300+6)/4
=(√50+√6)²/4
=[(5√2+√6)/2]²
x=8+4√3
=6+2√12+2
=(√6+√2)²
x-1=7+4√3
=4+2√12+3
=(2+√3)²
所以原式=√6+√2-2-√3