sanic123
sanic123
21-02-2019
Mathematics
contestada
Please help Hurry!!!
Respuesta :
Olivia123456
Olivia123456
21-02-2019
Answer:
b = 3
Step-by-step explanation:
4b² - 45 = -9
+45 +45
4b² = 36
b² = 9
b = √9
b = 3
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