Question

What are the zeros of the function f(x) = x2 – 10x + 21?
help bro

Answer 1

3, 7

Explanation:

"Zeros" means solutions to the equation f(x) = 0. In other words, what are the values of x that make the function's value equal to zero?

This one can be solved by factoring.

`x^2-10x+21=0\\(x-7)(x-3)=0\\x-7=0 \text{ or } x-3=0\\x=7 \text{ or } x=3`