Becca3115h Becca3115h

13-09-2019
Mathematics

contestada

Factor the expression completely
[tex] { \times }^{2} - 2x - 63 [/tex]

Respuesta :

isabellaaaa51 isabellaaaa51

13-09-2019

use form x^2 + bx + c
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)

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