A few days ago
i have it in my quiz and i answer it by help from one of my friend { ((x^3) -( 8)) ÷ (( x^2) -( 2x))}?
limt f (x) ; ((x^3) -( 8)) ÷ (( x^2) -( 2x))
x–> 2
i have this answers
2 , -2 , 6 , -6
and the answer was 6
how come????
thanx 🙂
Top 1 Answers
A few days ago
Favorite Answer
x^3 – 8 = (x-2)(x^2 + 2x + 4)
x^2 – 2x = x(x-2)
Cross out the (x-2) and you have
(x^2 + 2x + 4) over x which if x=2 becomes
4+4+4 over 2 which is 12/2 or 6
Hope that helps
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