Calculating with letters and multiplying out brackets (basics)

• Wiskunde
• Middelbare school
• havo, vwo
• Leerjaar 2

Wiskunde!

Math

Put on your table please:

book

notebook

laptop

pencil case

Remember this?
5a + 6a = ....

1. 30a​2​​
2. 11a​2​​
3. 11a
4. 9a

And this?
7a - 5b + 3a - 4b = ....

1. 10a​2​​−9b​2​​
2. 10a+9b
3. 10a−9b
4. 4a−1b

And now, by your self!
- 6a + 5b - 2a + 9b = ....
(Typ in the answer, without spaces)

Multiplying out binominals 

(dubbele haakjes wegwerken)

(x+3)(x+5)=

(2x+3)(5x−4)=

(x+2)(x−6)=

1. x​2​​−6x+2x−12
2. x​2​​−12−4x
3. x​2​​−8x−12
4. x​2​​−4x−12

(x+5)​2​​=

(x−4)​2​​=

Final question!
Typ in the answer, without spaces
x squared = x^2

(x+6)​2​​=

I think I can do the homework now....

😒🙁😐🙂😃