Final answer:
Real zeros are real number roots of a polynomial, and complex zeros are complex number roots. In significant figures, zeros may or may not be significant based on their position and context, with left-end zeros being non-significant and others being context-dependent.
Step-by-step explanation:
When discussing the number of real zeros and complex zeros in the context of Mathematics, we focus on polynomial functions and their roots. A real zero is a root of the polynomial that is a real number, while a complex zero is a root that is a complex number (including imaginary numbers).
Zeros in the context of significant figures denote the relevance of the digit in the precise measurement of a value. Left-end zeros are never significant as they are merely placeholders, while right-end zeros can sometimes be significant, especially if a decimal point is present in the number. Middle zeros, or zeros between nonzero digits, are always significant.