Learn.
An expression is a mathematical function which is not equating something.
For example:
3x + 4y + 2
An equation is a mathematical function which is saying this is equal to this.
For example:
3x + 4y + 2 = 3
Master.
Question 1.
Simplify the following:
a) 2x + 3y + 4x
b) 2xy + 3xy + 2x
c) 2y – 2y + 2x
d) 0.002x + 0.201x
e) 2x(x+3y)
f) 34x(x – 2y) + 2xy
g) -2xy(3y-2x)
Question 2.
Solve the following equations
a) 3x + 4 = 7
b) 2x2 = 8
c) 3x = 4
d) 2-23a = 0.002
e) (1 -3x) – 2(x+3) = 3
f) 34x(x – 2) + 2x = -2x
g) 8h – 13(2-h) + 3 = 0
