What are the restriction the on variables?
4-x/x^2-16
x≠-4 and x≠4
x≠-4
x≠4
No restrictions needed

Question

25-05-2017
Mathematics

contestada

What are the restriction the on variables?
4-x/x^2-16
x≠-4 and x≠4
x≠-4
x≠4
No restrictions needed

Respuesta :

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FLORC FLORC · Answer 1 · 2017-05-25T16:32:42+02:00

FLORC FLORC

25-05-2017

find what makes x^2-16=0 and those are the restrictions since denominator cannot equal 0
x^2-16
(x+4)(x-4)
x+4=0
x-4=0
x cannot equal -4
it can equal 4 because the top will also equal 0 so answer is possible
4-4/4^2-16= 0/0

Answer Link

What are the restriction the on variables? 4-x/x^2-16 x≠-4 and x≠4 x≠-4 x≠4 No restrictions needed

Respuesta :

Otras preguntas

What are the restriction the on variables?
4-x/x^2-16
x≠-4 and x≠4
x≠-4
x≠4
No restrictions needed