Enhanced Mathematics Vii: Quarter 2 - LAS 4
Enhanced Mathematics Vii: Quarter 2 - LAS 4
Enhanced Mathematics Vii: Quarter 2 - LAS 4
ENHANCED
MATHEMATICS VII
Quarter 2 – LAS 4
Name of
:
Learner ___________________________________________________
Grade Level : ___________________________________________________
Section : ___________________________________________________
Date : February 1 - 5, 2021
Algebraic Expressions
Topic
● Pen
● Paper
Page | 3
Examples:
6 ab−c
2. Find the value of if a = 5; b = 3 ; c = 10
abc
6 ab−c 5 ( 6 )( 3 )−10 80 8
Solution: = = =
abc 5 (3)(10) 150 15
Illustrative Examples
A. Addition of Polynomials
1) (5x + 7) + (3x + 3) 2) (3 x 2+ x +2 ¿ + ( x 2+ 4 )
1) 5x + 7 2) 3 x 2+ x +2
+ 3x + 3 + x2 +4
8 x + 10 4x2 + x + 6
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2) (3 x 2+ x +2 ¿ + ( x 2+ 4 ) = (3 x 2 + x 2) + ( x ) + (2 + 4)
= 4x2 + x + 6
B. Subtracting Polynomials
Example: (6 z 3+ 2 z2 - 5) - (−3 z 3+ 9 z 2- z + 1)
(6 z 3+ 2 z2 - 5) - (−3 z 3+ 9 z 2- z + 1) = (6 z 3+ 2 z2 - 5) + (3 z 3- 9 z 2+ z - 1)
= (6 z 3 +3 z 3) + (2 z2 - 9 z 2) + (z) + (-5-1)
= 9 z 3 + ( - 7 z 2 ) + z + (- 6 )
= 9 z3 - 7 z2 + z – 6
(6 z 3+ 2 z2 - 5) - (−3 z 3+ 9 z 2- z + 1) = (6 z 3 + 2 z2 - 5)
(+) (3 z 3- 9 z 2+ z - 1) change the signs of
the subrahends
9 z3 - 7 z2 + z – 6
5) 2x + 3 6) 3 y−7
+ 3x + 9 + x +2
7) 8x +9 8) −6 y 2 +7 b−5
+ x + 4y + 11 + −2 y 2−9 b+ 8
9) 3a + 5b – 4c 10) 3 x 2+7 x +9
2a – 3b + 7c −2 x2 + x−4
+ -a + 4b – 2c + x 2 + 3x −1
3) ( x 2+ 7x + 3) - ( x 2+ 7x + 3) = _________________
6) 6 x 2+ 9x + 10 7) c + 2d - e
- 3 x 2+ 5x + 4 - 3c + d + 6e
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A. Polynomial fence.
Find the perimeter of the following polygons. Write polynomials in
standard form.
Concepts Learned:
I learned that…
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Concepts Unlearned:
I need to know more about…
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Evaluation
Prepared/developed by
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MIA O. LAORDEN
Subject Teacher
Activity 1