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posledela
3 years ago
11

Y=2x2-4x-5 if x=-2 what is y

Mathematics
1 answer:
kkurt [141]3 years ago
4 0

Answer:

Step-by-step explanation:

y = 2x^2 - 4x - 5.......if x = -2

so sub in -2 for x

y = 2(-2^2) - 4(-2) - 5

   = 2(4) + 8 - 5

   =  8 + 8 - 5

   = 11 <==== y is 11

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