catherinesquitieri
03.07.2019 •
Mathematics
The roots of the function f(x) =x^2-2x-3are shown. what is the missing number
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Ответ:
x = - 1 or x = 3 are the roots
to find the roots equate f(x) to zero
x² - 2x - 3 = 0
(x - 3)(x + 1) = 0 ← factored form
equate each factor to zero and solve for x
x - 3 = 0 ⇒ x = 3
x + 1 = 0 ⇒ x = - 1
Ответ: