C2.1 Add and subtract monomials with a degree of 1, and add binomials with a degree of 1 that involve integers, using tools.
Activity 1: Addition and Subtraction of Monomials
Add and subtract the following monomials:
- ab - 3a + 4ab + 5a
- 4c + 6c2 + 7c - 3c2
- 4m + 6n + 3 + 7n - 2m + 5
Activity 2: Addition of Binomials
Add the following binomials:
- (3a + 5b) + (2a + 4b)
- (4c + 2d) + (-2c + 3d)
- (5e + 6f) + (3k + 9l)
- (4x - 5) + (6x + 4)
Activity 3: Real-Life Application of Binomials
The base and height of a certain rectangle are expressed as x + 6 and x + 2. Write an expression representing the perimeter of this rectangle.