eunice70 eunice70

19-01-2021
Mathematics

contestada

what is (-a + b) (-c + d)?

Respuesta :

sandypeeks999 sandypeeks999

19-01-2021

Answer:

(−a+b)(−c+d)

=(−a+b)(−c+d)

=(−a)(−c)+(−a)(d)+(b)(−c)+(b)(d)

=ac−ad−bc+bd

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