iu6tax9iau iu6tax9iau

18-01-2021
Mathematics

contestada

Can someone help with B pls

Can someone help with B pls class=

Respuesta :

jimrgrant1 jimrgrant1

18-01-2021

Answer:

see explanation

Step-by-step explanation:

(b)

Given

x² - 8x + 20 = (x - 4)² + 4

(x - 4)² will be positive for all real values of x , except x = 4, where it will be zero.

Then (x - 4)² > 0, so

(x - 4)² + 4 > 0 , that is always positive

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