Question

Tính nhanh

7,2 : 2 x 57,2 + 2,86 x 2 x 64

Answer 1

\(7,2\div2\times57,2+2,86\times2\times64\)

\(=7,2\times28,6+2,86\times128\)

\(=72\times2,86+2,86\times128\)

\(=2,86\times\left(72+128\right)\)

\(=2,86\times100=286\)

Answer 2

kq là 286 bn nhé nhớ k mk nhé xong joy kb lun nha

Answer 3

7,2:2x57,2+ 2,86x2x64

= 7,2:2x2x28,6 + 2,86x2x64

= 0,72x286 + 0,72x286 

= (0,72+1,28)x286

= 572