Question

ính

a,(2/5 +3/4)\(^2\)

b,(5/4 -1/6)\(^2\)

Giup tớ nhé,tớ cần gấp phải có lúc 15h15.Cảm ơn trc nha

  

Answer 1

a, \(\left(\frac{2}{5}+\frac{3}{4}\right)^2=\left(\frac{8}{20}+\frac{15}{20}\right)^2=\left(\frac{23}{20}\right)^2=\frac{529}{400}\)

b, \(\left(\frac{5}{4}-\frac{1}{6}\right)^2=\left(\frac{30}{24}-\frac{4}{24}\right)^2=\left(\frac{13}{12}\right)^2=\frac{169}{144}\)

Answer 2

a)\(\left(\frac{2}{5}+\frac{3}{4}\right)^2=\left(\frac{8}{20}+\frac{15}{20}\right)^2=\left(\frac{23}{20}\right)^2=\frac{529}{400}\)

b)\(\left(\frac{5}{4}-\frac{1}{6}\right)^2=\left(\frac{15}{12}-\frac{2}{12}\right)^2=\left(\frac{13}{12}\right)^2=\frac{169}{144}\)

Answer 3

\(a.\)

\(\left(\frac{2}{5}+\frac{3}{4}\right)^2\)

\(=\left(\frac{8}{20}+\frac{15}{20}\right)^2\)

\(=\left(\frac{23}{20}\right)^2\)

\(=\frac{529}{400}\)

\(b.\)

\(\left(\frac{5}{4}-\frac{1}{6}\right)^2\)

\(=\left(\frac{30}{24}-\frac{4}{24}\right)^2\)

\(=\left(\frac{26}{24}\right)^2\)

\(=\left(\frac{13}{12}\right)^2\)

\(=\frac{169}{144}\)