Given the polynomials, let's simplify the polynomials and label them.
Polynomial 1:
![\begin{gathered} (x-(1)/(2))(6x+2) \\ \text{Simplify:} \\ 6x(x)+2x+6x(-(1)/(2))+2(-(1)/(2)) \\ \\ =6x^2+2x-3x-1 \\ \\ =6x^2-x-1 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/st6yozcq22kwq3ibfairrnyuid137qm520.png)
After simplifying, we have the simplified form:
![6x^2-x-1](https://img.qammunity.org/2023/formulas/mathematics/college/qghhfwcw2ua9a312ep2ph8b04cpadqoxdv.png)
Since the highest degree is 2, this is a quadratic polynomial.
It has 3 terms, therefore by number of terms it is a trinomial.
Polynomial 2:
![\begin{gathered} (7x^2+3x)-(1)/(3)(21x^2-12) \\ \\ \text{Simplify:} \\ (7x^2+3x)-7x^2+4 \\ \\ =7x^2+3x-7x^2+4 \\ \\ \text{Combine like terms:} \\ 7x^2-7x^2+3x+4 \\ \\ 3x+4 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/v94eimigaq44h09qlka29uvh5m9hg6lrp6.png)
Simplified form:
![3x+4](https://img.qammunity.org/2023/formulas/mathematics/high-school/tyxuusvdhfa50miya1mkfjknm225vr3s0t.png)
The highest degree is 1, therefore it is linear
It has 2 terms, therefore by number of terms it is a binomial
Polynomial 3:
![\begin{gathered} 4(5x^2-9x+7)+2(-10x^2+18x-13) \\ \\ \text{Simplify:} \\ 20x^2-36x+28-20x^2+36x-26 \\ \\ \text{Combine like terms:} \\ 20x^2-20x^2-36x+36x+28-26 \\ \\ =2 \end{gathered}](https://img.qammunity.org/2023/formulas/mathematics/college/p4v88mpliit0q52p7kti4ss157dw3ldie0.png)
Simplified form:
![2](https://img.qammunity.org/2023/formulas/mathematics/high-school/92mjklr7y4x1zwg8hyobpthzdu9g0545ri.png)
The highest degree is 0 since it has no variable, therefore it is a constant.
It has 1 term, by number of terms it is a monomial.
ANSWER:
Polynomial Simplified form Name by degree Name by nos. of ter
1 6x²-x-1 quadratic Trinomial
2 3x + 4 Linear Binomial
3 2 Constant Monomial