Question

[Tô Thị Nguyệt Hà]

13(55-29)-55(13-29)

37(27+25)-27(37+25)

28(-25)+72(-25)

tính nhanh

Answer 1

[Nguyễn Lê Phước Thịnh]

a: \(=13\cdot55-13\cdot29-55\cdot13+55\cdot29\)

\(=-13\cdot29+55\cdot29=29\cdot42=1218\)

b: \(=37\cdot27+37\cdot25-27\cdot37-27\cdot25\)

\(=27\cdot12=324\)

c: \(=-25\left(28+72\right)=-25\cdot100=-2500\)