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Hello, it's a romance campus**, and it's about campus life.

6*6=36 cm (increased area of the opposite small square)120-36=84 cm (increased area of two adjacent rectangles)84 2=42 cm (area of a rectangle)42 6=7 cm (the length of the side of the original square)7*7=49 cm (the area of the original square)Remember to take the answer.

Let the side length of the original square be x

then (x+6)(x+6)-x = 120

x²+12x+36-x²=120

12x=84

x=7, so the area of the original square is x =49

Isn't it?

Solanum Lyratum Thunb

Solanaceae Solanaceae Solanaceae.

Synonyms: mountain beet, vine, north wind vine, white grass, white pod, white hairy vine, white hairy vine, white hairy tun, north phoenix vine.

It's like a wild fruit that I ate when I was a child.

Take it to the Chinese Academy of Sciences for experts to study, maybe you will find something better than **!

Phytolacca americana L) is a kind of Shanglu medicinal material, called weeping Shanglu. It is an invasive plant, native to North America, also known as the American mercandia.

The seeds of this plant can be spread by birds, etc., and the whole plant of the American Merchant Land is poisonous, and the roots and fruits are the most toxic, so it is necessary to be vigilant. The seeds are black and shiny. Flowering period in summer.

In most parts of the country, there is a cultivation hall.

Chinese cave stove hidden scientific name.

American Merchant Land. Latin scientific name.

phytolacca americana l.

Another name. Shang Lu, American Shang Lu, Ten Rui Shang Lu, Vertical Shang Lu.

World. Plantae.

Door Debate. Angiosperm phylum.

Class. Dicotyledonous class.

Eye. Caryophyllus.

Section. Phytolaccaceae.

Genus. Phytolacca.

Hosta.

hosta plantaginea (lam.) aschers.

Liliaceae Hosta genus.

Aliases: several oak rod hosta, judge hosta, potato chong, white calyx, white calyx, white stork fairy, white crane grass.

In the first case, the same number is filled in parentheses, set to x, and the solution has no real root (root: the solution of the equation).

The second case: fill in different numbers in parentheses, the first two equations, the last two blanks of 12 are not 0, 1, -1, integer multiples. The next two empty 24 are non-0, 1, -1, integer multiples. The third and fourth two equations, the upper and lower blanks are filled in with the same non-zero real number.