Verified Answer :

reinhard10158

Step-by-step explanation:

the "number of zeros" means all values of x for which the expression delivers 0 as result.

so,

x⁴ + x + 2 = 0

now, any polynomial with n being the highest exponent of the variable has exactly n zeros.

some might be identical, some might be complex/imaginary numbers, but there are always n zeros.

so, in our case, we have 4 zeros.

FYI

in this case we have actually 4 complex numbers as solution (rather complicated expressions, so I skip the details).

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