marquttx
marquttx
18-07-2022
Mathematics
contestada
I need help with this
Respuesta :
mathstudent55
mathstudent55
18-07-2022
Answer:
361
Step-by-step explanation:
discriminant = b² - 4ac
= (21)² - 4(1)(20)
= 441 - 80
= 361
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