maud96 maud96
  • 03-12-2019
  • Mathematics
contestada

if x=-3 is (x-5)(x-7)<0?​

Respuesta :

jimthompson5910 jimthompson5910
  • 03-12-2019

Answer: False

=============================

Replace every x with -3. Then simplify the left side.

(x-5)(x-7) < 0

(-3-5)(-3-7) < 0

(-8)*(-10) < 0

80 < 0 ... this statement is false, 80 is not smaller than 0

----

(x-5)(x-7) < 0  is false when x = -3

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