The Fundamental Theorem of Algebra states that a polynomial of degree \( n \) will have exactly \( n \) roots (including complex and repeated roots) in the complex number system.
The polynomial given is \( y = 8x^5 - 2x^4 + 6 \). The degree of this polynomial is determined by the highest power of \( x \), which is \( 5 \) (from the term \( 8x^5 \)).
Therefore, based on the Fundamental Theorem of Algebra, this polynomial will have exactly \( 5 \) roots.
The correct response is:
five roots