几道计算题 1.(9√3+7√12-√50)-(5√48-3√32) 2.√25/2+4√1.75-1/6√28+√1/
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几道计算题 1.(9√3+7√12-√50)-(5√48-3√32) 2.√25/2+4√1.75-1/6√28+√1/200
3.(4√0.5-2√1/3)-(4√0.125-√12)
4.(√8-2√0.25)-(√9/8+√50+2/3√72)
以上“√”符号为根号
3.(4√0.5-2√1/3)-(4√0.125-√12)
4.(√8-2√0.25)-(√9/8+√50+2/3√72)
以上“√”符号为根号
1.(9√3+7√12-√50)-(5√48-3√32)
=9√3+14√3-5√2-20√3+12√2
=3√3+7√2
2.√25/2+4√1.75-1/6√28+√1/200
=5√2/2+2√7-√7/3+√2/20
=(51/20)√2+(5/3)√7
3.(4√0.5-2√1/3)-(4√0.125-√12)
=2√2-(2/3)√3-√2+2√3
=√2+(4/3)√3
4.(√8-2√0.25)-(√9/8+√50+2/3√72)
=2√2-1-(3/4)√2-5√2-4√2
=(-31/4)√2 -1
=9√3+14√3-5√2-20√3+12√2
=3√3+7√2
2.√25/2+4√1.75-1/6√28+√1/200
=5√2/2+2√7-√7/3+√2/20
=(51/20)√2+(5/3)√7
3.(4√0.5-2√1/3)-(4√0.125-√12)
=2√2-(2/3)√3-√2+2√3
=√2+(4/3)√3
4.(√8-2√0.25)-(√9/8+√50+2/3√72)
=2√2-1-(3/4)√2-5√2-4√2
=(-31/4)√2 -1
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