Warm Up – Write an algebraic expression for each example 1) Twenty less than a number n 2) 7 times the quantity x minus 3 3) The quotient of a + b and 2 4) 2 cubed decreased by three 5) The total of the numbers a, b and c **CW Worksheet #s 1- 8 as warm up

Homework Check 1.1 1) z – 3 2) 2b 3) 4m 4) 4x + 3 5) 2a – 9 6) nine more than the product of -4 and a number x 7) The product of 2 and n divided by 3

Simplifying & Evaluating Expressions Unit 1, Day 2

**Reminders Like terms- have identical variables, meaning they have the same variables to the same exponent Constants are like terms Simplify means to rewrite an expression using the smallest number of terms

Equivalent Expressions Expressions that have the same value for all the values of the variables It is a step to finding the most simplified expression The most simplified expression is also an equivalent expression

Examples: Identify the Like Terms 1. 2. 3. 4.

Examples: Now Combine the like terms 1. 2. 3. 4. Make sure to point out to your students an EQUIVALENT EXPRESSION and the MOST SIMPLIFIED EXPRESSION

Distributive Property The process of simplifying an expression by distributing a term by multiplying to any contents in the parenthesis. EX: Simplify each expression: 1) 2) 3) 4)

Simplify each expression: 1. 5(y + 2) + 7y 2. 5(x + 3) + 7 (4 + 2x) 3. – 3 (z + y) – 4 (3 + 5z)

CW Worksheet #s 9 – 19 odds Work together!!!

Evaluating Expressions To evaluate expressions you simply plug given values into the expression Make sure to use PEMDAS when evaluating Example: If a = 9 , b = 8, and c = 5, evaluate: 8c + ab – 4b

Evaluating Expressions 1. If a = 12, b = 5, and c = 4, evaluate: 3c + bc – 2a 2. If x=4, y=-2, and w=1/2, evaluate: 3. If p=-3, q=2, and u=8, evaluate:

CW Worksheet #s 1 – 14 odds

Homework: HW 1.2 Remember – Quiz Friday!!