SWBAT

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SWBAT combine like terms to simplify expressions
Fri, 8/19

• Agenda
• Warm-up (5 min)
• Review HW2 (15 min)
• Combining like terms with lots of examples (20
  min)
• Warm-Up
• Given a2 4a 3
• Algebraic equation or expression
• Terms
• Variable terms
• Constant term
• Coefficients
• HW3 Combining like terms

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• Example a2 4a 3
• Algebraic equation or expression expression
• Terms a2, -4a, 3
• Variable terms a2, -4a
• Constant term 3
• Coefficients 1, -4

Warning!!! Always take the sign that is in front
of the coefficient!
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• Lets review HW1

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Algebraic ExpressionsObjective To combine like
terms to simplify expressions

• Infinity HS
• Ms. Sophia Papaefthimiou

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Like Terms
Like Terms are terms with the same variable AND
the same exponent.
To simplify expressions with like terms, simply
combine the like terms.
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Are these like terms? 1) 13k, 22k
Yes, the variables and exponents are the
same. 2) 5ab, 4ba Yes, the order of the
variables doesnt matter. (Commandment 9) 3)
x3y, xy3 No, the exponents are on different
variables.
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WARNING!!!!

• You calculate the answer using the sign that is
  to the left of the number or variable.

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1.) Which of the following is the simplified
form of -4x 7x ?

1. -4
2. 3x
3. -3x
4. 4

Dont forget the negative!
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2.) Which of the following is the simplified
form of 5x 4 7x 14 ?

1. 12x 18
2. -2x 10
3. 2x 18
4. 12x 18

-2x
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SWBAT combine like terms to simplify expressions
Mon, 8/22

• Agenda
• Warm-up (10 min)
• Combining like terms examples (10 min)
• OYO problems CLT (10 min)
• Review HW3 (15 min)
• Warm-Up Simplify each expression
• 1.) -5a 7a
• 2.) 4x2y x2y
• 3.) -3m2n 10mn2 7m2n 4mn2
• 4.) If a triangle has sides 3x 2, 5 x and
  2x 5, what is the perimeter of the triangle?
• Review PPT5 Distributive property (on the
  Infinity website)

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• 3.) -4d 6a2 2d 12a2
• -18a2 2d

4.)
6.) 13a 8a 6b
21a 6b
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OYO Problems (On Your Own)

• 1) 5a2 7a
• Simplified
• 2) 6.1y 3.2y
• 2.9y
• 3) -4x2y x2y x2y x2
• -4x2y x2
• 4) 3m2n 10mn2 7m2n 4mn2 9m
• -4m2n 6mn2 9m

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• Work on HW3 Combining like terms
• (will be collected at the end of the period)