adding and subtracting radicals ppt white board practice
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42510011 0010 1010 1101 0001 0100 1011
Adding/Subtracting Radical Expressions
White Board Practice
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0011 0010 1010 1101 0001 0100 1011Adding & Subtracting Radicals
1. 2√2 + 3√2
2. 2√25 + √36
3. √25 - √9
4. 2√72 - 3√2
Warm Up – Thursday, Sept 16
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Question # 1
2 2 6 2
Add or Subtract
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Answer # 1
8√2
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Question # 2
10 6 10
Add or Subtract
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Answer # 2
-5√10
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Question # 3
Add or Subtract
4√x - 5√5x
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Answer # 3
It is in simplest form
4√x - 5√5x
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Question # 4
Add or Subtract
-8√3d + 6√2d + 10√3d
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Answer # 4
2√3d + 6√2d
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Question # 5
Add or Subtract
9√y - √y
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Answer # 5
8√y
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Question # 6
3 11 5 6 5 11
Add or Subtract
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Answer # 6
4√11 + -5√5
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Question # 7
Add or Subtract
3√8 + √45
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Answer # 7
6√2 + 3√5
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Question # 8
Add or Subtract
2√80 - √20
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Answer # 8
6√5
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Question # 9
√63 + √175 + √112
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Answer # 9
12√7
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Question # 10
The length of the side of a bulletin board is 4 ft, what is the area of the bulletin board?
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Answer # 10
16 square feet
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Question # 11
For high school wrestling competitions, the wrestling mat must be a square with an area of 625 square feet. What is the length of each side of the mat?
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Answer # 11
25 feet
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Question # 12
Simplify each expression.
20 - √16
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Answer # 12
16
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Question # 13
Simplify each expression.
√100
√4
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Answer # 13
5
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Question # 14
Simplify each expression.
√49
7
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Answer # 14
1
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Question # 15 Simplify each expression.
2√64 + 5
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Answer # 15
21
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Question # 16 Simplify each expression.
48 3 18 2 27p p p
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Answer # 16 Simplify each expression.
9 2 2 3p p
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Question # 17 Simplify each expression.
2 75 12 108m m m
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Answer # 17 Simplify each expression.
2 3m
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Question # 18
Error Analysis: Determine if the
student worked the problem incorrectly
below. If the problem is
incorrect, please re-work the problem
(show all work) and explain the error using details and math vocabulary.
3√6 + 2√6
= 5√12
Correct or Incorrect?
You decide……..
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Answer # 16
The student worked the problem incorrectly
because he/she did not follow the rules for
adding and subtracting radicals. When the radicands
the same, you keep the radicand and add the coefficients together.
See corrected problem below:
3√6 + 2√6 - The radicands are the same so I was able to add the
Coefficients 3 and 2 get the answer 5. I left 6 as the radicand under the
Radical sign.
5√6
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Quiz tomorrow over radicals……
STUDY…..STUDY……STUDY……
Good luck tomorrow!
One more thing……..
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STUDY for the radical quiz tomorrow