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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

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
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2 votes
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

asked
User Shauvik
by
8.5k points

2 Answers

3 votes

Answer:

C. f(x) = x2 – 10x + 21

Explanation:

answered
User Bill Ingram
by
8.6k points
6 votes
Hello,

Answer C
s=3+7=10
p=3*7=21
==>x²-10x+21

answered
User Patrick Ritchie
by
8.5k points
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