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hhh976
13.09.2019 •
Mathematics
Factor the expression completely
![{ \times }^{2} - 2x - 63](/tex.php?f= { \times }^{2} - 2x - 63 )
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Ответ:
b = -2
c = -63
find a pair of integers whose product equals c and sum equals b
so, find a product that equals -63 and a sum that equals -2
-9 + 7 = -2
-9 • 7 = -63
write in factored form ->
(x - 9)(x + 7)
Ответ:
step by step:
b-9=4