1.解:∵x^5+3x^3+5x+7=0
∴x^5+3x^3+5x=-7
∴2(x^5+3x^3+5x)=-14
∴10-2x^5-6x^3-10x
=10-2(x^5+3x^3+5x)
=10-(-14)
=24
2. 解:√(1/2)×√(2/3)×√(3/4)×……×√(99/100)
=√[(1/2)×(2/3)×(3/4)×……×(99/100)]
=√(1/100)
=1/10
3.解:∵√3>√2
∴|√2-√3|=-(√2-√3)
∴3(√3-√2)-2(√2+√3)+|√2-√3|
=3√3-3√2-2√2-2√3-√2+√3
=2√3-6√2
4.解:√[(1-√2)²]+√[(√2-√3)²]+√[(√3-√4)²]+……+√[(√99-√100)²]
=-(1-√2)-(√2-√3)-(√3-√4)-……-(√99-√100)
=√2-1-√2+√3-√3+√4-……-√99+√100
=-1+√100
=10-1
=0
1.=1/10
2.=2根号3-6根号2
3.=9
额