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F(x) = x2 – 2x – 15 BRANARE Why is x=-3 not x=-5

F(x) = x2 – 2x – 15 BRANARE Why is x=-3 not x=-5
asked 91.9k views
2 votes
F(x) = x2 – 2x – 15
BRANARE
Why is x=-3 not x=-5

asked
User Valentin Baryshev
by
7.6k points

1 Answer

6 votes

Answer:

x = 5, -3

Explanation:

f(x) = x²-2x-15

f(x) = (x-5)(x+3)

x = 5, -3

answered
User Igor Azevedo
by
8.1k points
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