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Online Quiz (Worksheet A B C D)

Questions Per Quiz = 2 4 6 8 10

Grade 6 - Mathematics
12.38 Addition of Trinomials - I

Add the given equations using the "Horizontal Method."

Example: 7x-5y+4a, -5z+2b-x and -3x+2y-b.
Solution: Summing the expressions,
(7x-5y+4a)+(-5z+2b-x)+(-3x+2y-b)

Associative Law allows us to rewrite the expressions to bring the like-terms together as shown below,
[7x+(-x)] + [(-5y)+2y] + (-5z) + [4a+(-3a)] + [2b+(-b)]
= [7+(-1)]x + [(-5)+2]y + (-5z) + [4+(-3)]a + [2+(-1)]b
= 6x-3y-5z+a+b


Directions: Given the following expressions, find the values of the addition combinations given in the questions.
A=5p2-3q2+r2,
B=-2q2+3p2-4r2,
C=-7r2+3p2+2q2,
P= x+y-z,
Q=y+z-x, and
R=z+x-y
Q 1: A + B = _____ ?
11rp2-3q2-10r2
62-11r2
8p2-5q2-3r2
8p2-q2-6r

Q 2: A + B + C = _____ ?
11rp2-3q2-10r2
62-11r2
8p2-5q2-3r2
8p2-q2-6r

Q 3: R + P = _____ ?
2z
2y
2x
x+y+z

Q 4: B + C = _____ ?
11rp2-3q2-10r2
8p2-q2-6r
8p2-5q2-3r2
62-11r2

Q 5: P + Q + R = _____ ?
2y
2z
2x
x+y+z

Q 6: p + Q = _____ ?
2y
2z
2x
x+y+z

Question 7: This question is available to subscribers only!

Question 8: This question is available to subscribers only!


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