1. Algebra

2. Simplifying Expressions Like terms only can be added or subtracted
4x – 6y – 3x + 7y ) 5x² + 9y – 6x + x² y
= x + y = 6x² + 8y – 6x – 5
3) ( x + 4 ) (x + 5 ) ) (3x – 1 ) ( 2x + 6 )
= x ( x + 5 ) + 4 ( x+ 5 ) x( 2x + 6 ) – 1 ( 2x + 6 )
= x² + 5x + 4x x² + 18x – 2x - 6
= x² + 9x x² + 16x - 6

3. Evaluating Expressions
Find the value of 2x² - 5x + 6 when x = 3
2 (3) ² - 5(3) + 6 =
2(9) – = 9
Evaluate 2x² - 3y when x = -3 and y = 2
2( -3) ² – 3 (2)
18 – 6 = 12

4. Solving Linear Equations
Equations will always have an equal sign
6x – 4 = 2x ( 2x – 4 ) = 3(2x – 1) - 1
6x – 2x = x – 20 = 6x – 3 - 1
4x = x – 6x =
X = x = 16
x = 4