Question

Tính:

\(A=\frac{1.5.6+2.10.12+4.20.24+9.45.54}{1.3.5+2.6.10+4.12.20+9.27.45}\)

Câu này dễ nha. Ai nhanh + đúng mình tick.

Answer 1

\(A=\frac{1\cdot5\cdot6+2\cdot10\cdot12+4\cdot20\cdot24+9\cdot45\cdot54}{1\cdot3\cdot5+2\cdot6\cdot10+4\cdot12\cdot20+9\cdot27\cdot45}\)

\(A=\frac{1\cdot5\cdot6\cdot\left(1+2+4+9\right)}{1\cdot3\cdot5\cdot\left(1+2+4+9\right)}\)

\(A=\frac{1\cdot5\cdot6}{1\cdot3\cdot5}\)

\(A=2\)

Answer 2

\(A=\frac{3.24.2}{13}=\frac{144}{13}\)

Answer 3

\(A=\frac{3.24.2}{13}=\frac{144}{13}\)

nha bn

k mik nha thanks

Answer 4

=>1/2.A=1.5.6+2.10.12+4.20.24+9.45.54 /        1.3.5.2+2.6.10.2+4.12.20.2+9.27.45.2

=>1/2.A=1.5.6+2.10.12+4.20.24+9.45.54 / 1.5.6+2.10.12+4.20.24+9.45.54

=>1/2.A=1

=>A=2

Answer 5

\(A=\frac{1.5.6+2.10.12+4.20.24+9.45.54}{1.3.5+2.6.10+4.12.20+9.27.45}\)

\(\Rightarrow A=\frac{2.\left(1.3.5+2.6.10+4.12.20+9.27.45\right)}{1.3.5+2.6.10+4.12.20+9.27.45}\)

\(\Leftrightarrow A=2\)

Answer 6

a = 2nha