Question

Giúp me🥺🥺

Answer 1

-13/25x9/17+13/17x8/25+(-13/25)

=-13/25x9/17+8/17x13/25+(-13/25)

=13x(-9/17+8/17-1)

=13x(-18/17)=-234

Answer 2

a) Ta có: \(\dfrac{-13}{25}\cdot\dfrac{9}{17}+\dfrac{13}{17}\cdot\dfrac{8}{25}+\dfrac{-13}{25}\)

\(=\dfrac{-13}{25}\cdot\dfrac{9}{17}-\dfrac{-13}{25}\cdot\dfrac{8}{17}+\dfrac{-13}{25}\)

\(=\dfrac{-13}{25}\left(\dfrac{9}{17}-\dfrac{8}{17}+1\right)\)

\(=\dfrac{-13}{25}\cdot\dfrac{18}{17}\)

\(=-\dfrac{234}{425}\)