Unidentified Weeds

Good evening everyone, I have 2 problems that I hope someone may be be able to help myself with. I have 2 as of yet unidentified weeds that are proving rather troublesome in eradicating from my garden.
This one pictured below has leaves almost 'Rhubard like' and when dug up they have white bulbous tumour like roots that snake for considerable distances. Seeming I'm only able to post one picture at a time so, I'll post the other weed on the next post. Thanking you in advance.
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Mangle101

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On Monday, July 14, 2014 at 3:40:40 PM UTC-4, Mangle101 wrote:

Check out http://www.rce.rutgers.edu/weeds/thumbnail.asp http://www.ipm.ucdavis.edu/PMG/weeds_common.html
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On Thursday, March 5, 2015 at 6:54:19 AM UTC-5, EdPaolo wrote:

The post is from way back in July, so poster is probably long gone. But if not, since the weed appears to be in a section that doesn't have other desirable plants around it, spray it with Roundup (glyphosate). That will kill it and almost anything else.
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