Dude. First picture is a fine growing example of a dandelion!
Second picture has more dandelions, plus a couple of Common Plantains, not to mention the grass blades.
Personally, I like dandelions in the yard. The flowers are pretty. It's fun to blow the seed heads in the air. You can make dandelion wine from the flowers. You can pick the new leaves for salads, or cook them for a vegetable. You can dig up the roots, dry, roast, and grind them into a coffee substitute. There's even a company in Europe that has bred a variety of dandelion to produce a latex usable in automotive tires as a substitute for rubber.
Or you can just get a small hand digger and remove them that way. I did that a couple of times when I was in military housing and never had much trouble preventing them from coming back.
Wikipedia has it that Plantago major (broadleaf plantain, common plantain or greater plantain) is a species of plantago, family Plantaginaceae. The plant is native to most of Europe and northern and central Asia, but has widely naturalised elsewhere in the world.
Plantago major is one of the most abundant and widely distributed medicinal crops in the world. A poultice of the leaves can be applied to wounds, stings, and sores in order to facilitate healing and prevent infection. The active chemical constituents are aucubin (an anti-microbial agent), allantoin (which stimulates cellular growth and tissue regeneration), and mucilage (which reduces pain and discomfort). Plantain has astringent properties, and a tea made from the leaves can be ingested to treat diarrhea and soothe raw internal membranes.
Broadleaf plantain is also a highly nutritious wild edible, that is high in calcium and vitamins A, C, and K. The young, tender leaves can be eaten raw, and the older, stringier leaves can be boiled in stews and eaten.