Classify the following polynomials as monomials, binomials, trinomials. Which polynomials do not fit in any of these three categories? `x + y , 1000, x + x^2 + x^3 + x^4 , 7 + y + 5x, 2y - 3y^2, 2y - 3y^2 + 4y^3, 5x -4y + 3xy, 4z - 15z^2, ab + bc +cd + da, pqr, p^2q + pq^2, 2p + 2q`

Explanation

To classify the given polynomials, we will analyze each polynomial based on the number of terms it contains. Here’s the step-by-step solution:

1. **Polynomial: \(x + y\)**
- This polynomial contains **2 terms**: \(x\) and \(y\).
- **Classification**: Binomial

2. **Polynomial: \(1000\)**
- This polynomial contains **1 term**: \(1000\).
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