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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