CHEECK MY ANSWER PLS
How many zeros does the function f(x) = 4x11 − 20x7 + 2x3 − 15x + 14 have?

11
7
5
3

Question

CHEECK MY ANSWER PLS 
How many zeros does the function f(x) = 4x11 − 20x7 + 2x3 − 15x + 14 have?

 11
 7
 5
 3 <---- correct ?

anonymous · Answer

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anonymous · Answer

This problem is so easy it's funny

empty · Answer

@AlexandervonHumboldt2 wrong, how many real roots does this polynomial have?

$$f(x) = x^2+ 14$$

empty · Answer

I don't know how to do this without graphing it, but the graph shows 3 zeroes @Gabylovesyou http://www.wolframalpha.com/input/?i=f(x)%20%3D%204x11%20%E2%88%92%2020x7%20%2B%202x3%20%E2%88%92%2015x%20%2B%2014%20&t=crmtb01

alexandervonhumboldt2 · Answer

i made a mistake  sorry

imqwerty · Answer

yea ur correct

owlcoffee · Answer

The highest exponent represents how many solutions we can find for the equation, now the roots for the plane are limited by the real numbers.
This means that all solutions for $f(x)=0$ are not necessarily real numbers, so they will become complex, therefore they can't be counted as roots.

anonymous · Answer

$$x^2+14~ has~ no~ real~ root.$$

imqwerty · Answer

number of real roots=3

triciaal · Answer

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