\(\frac{16.17-5}{16.16+11}\)

\(=\frac{16.16+16-5}{16.16+11}\)

\(=\frac{16.16+11}{16.16+11}\)

\(=1\)

\(\frac{16\cdot17-5}{16\cdot16+11}\)

\(=\frac{16\cdot17-5}{16\cdot17-16-11}\)

\(=\frac{16\cdot17-5}{16\cdot17-5}\)

\(=1\)

mk ko copy của Trần Thùy Dung nhé

\(\frac{16.17-5}{16.16+11}\)

\(=\frac{17-5}{16+11}\)

\(=\frac{12}{27}\)

Bài làm

      \(\frac{16x17-5}{16x16+11}\)

\(=\frac{272-5}{256+11}\)

\(=\frac{267}{267}\)

\(=1\)

# Học tốt #

\(\frac{16.17-5}{16.16+11}\)

\(=\frac{16.\left(16+1\right)-5}{16^2+11}\)

\(=\frac{16^2+16-5}{16^2+11}\)

\(=\frac{16^2+11}{16^2+11}=1\)

 (Nhớ k cho mình với nhé!)

\(\frac{16\cdot17-5}{16\cdot16+11}=1\)

\(\frac{16\times17-5}{16\times16+11}=\frac{16\times\left(16+1\right)-5}{16\times16+11}=\frac{16\times16+16-5}{16\times16+11}=\frac{16\times16+11}{16\times16+11}=1\)

Trả lời

\(\frac{16\times17-5}{16\times16+11}=\frac{16\times\left(16+1\right)-5}{16\times16+11}\)

                             \(=\frac{16\times16+16-5}{16\times16+11}\)

                             \(=\frac{16\times16+11}{16\times16+11}\)

                              \(=1\)

\(\frac{16x17-5}{16x16+11}=\frac{16x16+16-5}{16x16+11}=1\)

\(\frac{4}{3x7}+\frac{5}{7x12}+\frac{1}{12x13}+....+\frac{3}{20x23}\)

=\(\frac{1}{3}-\frac{1}{7}+\frac{1}{7}-\frac{1}{12}+\frac{1}{12}-\frac{1}{13}+...+\frac{1}{20}-\frac{1}{23}\)

=\(\frac{1}{3}-\frac{1}{23}=\frac{20}{69}\)

a) \(\frac{16\cdot17-5}{16\cdot16+11}\)

= \(\frac{16\cdot16+16-5}{16\cdot16+11}\)

= \(\frac{16\cdot16+11}{16\cdot16+11}=1\)

a: A=16*16+16-5=16*16+11

=>A=B

b: A=2000*2000=2000^2

B=1998*2002=(2000-2)(2000+2)=2000^2-4

=>A<B

d: B=(2020-1)(2020+1)=2020^2-1

=>B<A

x la nhan ha ban

a)=1

b)2 phan 3