Question

Which function has real zeros at x = 3 and x = 7?

f(x) = x2 + 4x – 21
f(x) = x2 - 4x – 21
f(x) = x2 – 10x + 21
f(x) = x2 – 10x - 21

Answer 1

C: f(x) = x2 – 10x + 21

Answer 2

The answers is the 3rd one f(x)=x2-10x+21 hope this helps :)