Question

Need rn! worth 25 points (you MUST answer BOTH questions) 谢谢你！

Answer 1

• Number 1 - 3 terms (B)
• Number 2 - 2nd and 3rd options

Number 1 Explanation:

• Terms are separated by addition or subtraction signs.
• There are three parts separated by two addition/subtraction signs.
• That means there are three terms.

Number 2 Explanation:

• Polynomials can't have negative exponents.
• Polynomials can't have fractional exponents on variables or roots of variables.
• For the first option,
  `(1)/(x)` can also be written as
  `x^(-1)`, so it has a negative exponent and is not a polynomial.
• The second and third options follow polynomial rules.
• The fourth option has
  `x^{(1)/(2) }`, which is the same thing as
  `√(x)`. Polynomials can't have roots of variables (or fractional exponents on variables), so this isn't a polynomial.