lilleyaah74 lilleyaah74

03-10-2021
Mathematics

contestada

Which function has real zeros at x = 3 and x = 7?
A. f(x) = x2 + 4x – 21
B. f(x) = x2 - 4x - 21
C. f(x) = x2 - 10x + 21
D. f(x) = x² – 10x - 21

Respuesta :

crissz67 crissz67

03-10-2021

Answer:

C

Step-by-step explanation:

3^2-10(3)+21=0

7^2-10(7)+21=0

Answer Link

akhil9553386 akhil9553386

03-10-2021

Answer:

C. f(x) = x² - 10x + 21

Step-by-step explanation:

Let f(x) = 3

=> 3² - 10(3) +21

=>9 - 30 + 21

=> 30 - 30

=> 0

Answer Link

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