a+b+c=d+g= ?
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Áp dụng dãy tỉ số bằng nhau:
\(\frac{a}{b}=\frac{b}{c}=\frac{c}{d}=\frac{d}{e}=\frac{e}{g}=\frac{a+b+c+d+e}{b+c+d+e+g}\)
=> \(\left(\frac{a}{b}\right)^{404}.\left(\frac{b}{c}\right)^{404}.\left(\frac{c}{d}\right)^{404}.\left(\frac{d}{e}\right)^{404}.\left(\frac{e}{g}\right)^{404}\)
\(=\left(\frac{a+b+c+d+e}{b+c+d+e+g}\right)^{404}.\left(\frac{a+b+c+d+e}{b+c+d+e+g}\right)^{404}.\left(\frac{a+b+c+d+e}{b+c+d+e+g}\right)^{404}.\left(\frac{a+b+c+d+e}{b+c+d+e+g}\right)^{404}.\left(\frac{a+b+c+d+e}{b+c+d+e+g}\right)^{404}\)
=> \(\left(\frac{abcde}{bcdeg}\right)^{404}=\left(\frac{a+b+c+d+e}{b+c+d+e+g}\right)^{404+404+404+404}\)
=> \(\frac{a^{404}}{g^{404}}=\left(\frac{a+b+c+d+e}{b+c+d+e+g}\right)^{2020}\)
I:Find the word with different sound in the underline part in each line
1.A girl B group C ground D Gremany
2.A complete B century C continent D colour
3.A keep B look C knock D sky
4.A guest B dangerous C general D engineer
5.A company B competition C center D collection
1. a. key b. check c. guide d. clock
2. a. class b. get c. ghost d. giggle
3. a. school b. guidance c. cold d.could
4. a.coin b. gold c. good d. goat
5. a. coat. b cup c. coffice d. grape
6. a. gate. b.can c. girl d. class (?)
7. a. grey b. pocker c. scarf d. sky
8. a. bag b. clog c. capital d. frog (?)
9. a. scooter b. grow c. because d. carpet
a=1
b=2
c=3
1+2+3=6
d=6
g=0
a+b+c=d+g=6