- A
- B
- C
- D
Step-by-Step Solution
. The square of a difference keeps term and needs the middle term ; only the product gives .
Answer: A)
A student expands as . What is the correct expansion?
Class 9PolynomialsPolynomials
Key idea: Naming polynomials by terms and degree
By number of terms:
- **Monomial**: 1 term (e.g. )
- **Binomial**: 2 terms (e.g. )
- **Trinomial**: 3 terms (e.g. )
By degree:
- **Linear** (degree 1):
- **Quadratic** (degree 2):
- **Cubic** (degree 3):
- **Biquadratic** (degree 4):
A polynomial can fit multiple categories. is both a monomial and a cubic.
- **Monomial**: 1 term (e.g. )
- **Binomial**: 2 terms (e.g. )
- **Trinomial**: 3 terms (e.g. )
By degree:
- **Linear** (degree 1):
- **Quadratic** (degree 2):
- **Cubic** (degree 3):
- **Biquadratic** (degree 4):
A polynomial can fit multiple categories. is both a monomial and a cubic.
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