Answer:
1. [tex]12x^2-13.4x-11[/tex]
- Degree: 2
- Number of terms: 3
2. [tex]7x^3+168[/tex]
- Degree: 3
- Number of terms: 2
3. [tex]9x^4-9[/tex]
- Degree: 4
- Number of terms: 2
Step-by-step explanation:
For this exercise you need to remember the multiplication of signs:
[tex](+)(+)=+\\(-)(-)=+\\(-)(+)=-\\(+)(-)=-[/tex]
1. Given:
[tex](4x + 2.2)(3x - 5)[/tex]
Apply the Distributive property:
[tex]=12x^2+6.6x-20x-11[/tex]
Add the like terms:
[tex]=12x^2-13.4x-11[/tex]
You can idenfity that:
- Degree: 2
- Number of terms: 3
2. Given:
[tex](-304 +503 - 12) + (7x^3 - 25 + 6)[/tex]
Add the like terms:
[tex]=187 + 7x^3 - 25 + 6=7x^3+168[/tex]
You can idenfity that:
- Degree: 3
- Number of terms: 2
3. Given:
[tex](3x^2 - 3)(3x^2 + 3)[/tex]
Apply Distributive property:
[tex]=9x^4-9x^2+9x^2-9[/tex]
Add the like terms:
[tex]=9x^4-9[/tex]
You can idenfity that:
- Degree: 4
- Number of terms: 2