Mathematics, 29.04.2021 22:50, dragonslayer321

A teacher gave her class two functions, f(x) = (x - 5] + 4 and g(x) = -x2 + 21, and asked for the solution(s) of the equation
f(x) = g(x). The answers given by four students are shown below:
Betty: only 4
Donna: only 5
Edward: 12 and 5
Gary: -3 and 4
Who found the solution correctly and why?

Answers: 2

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A teacher gave her class two functions, f(x) = (x - 5] + 4 and g(x) = -x2 + 21, and asked for the...