Algebraic Expressions
139
4. Find the sum of 5z+ 2yz? + 9yʻz – byz + 10y? and 8y? + 2zy - 62+y + 2zy - 32). Also, find the
coefficient of the term involving yz in the sum so obtained.
Answers
Answered by
4
Algebraic Expressions
Exercise 9.1
Question 1: Identify the terms, their coefficients for each of the following expressions.
(i)
5
x
y
z
2
–
3
z
y
Answer: Term:
x
y
z
2
-- Coefficient
=
5
Term:
z
y
-- Coefficient
=
3
(ii)
1
+
x
+
x
2
Answer: Term:
x
-- Coefficient
=
1
and Term:
x
2
-- Coefficient = 1
(iii)
4
x
2
y
2
–
4
x
2
y
2
z
2
+
z
2
Answer: 4 is the coefficient for
x
2
y
2
z
2
1 is the term for
z
2
(iv)
3
–
p
q
+
q
r
–
r
p
Answer: For each term the coefficient is 1
(v)
x
2
−
y
2
=
x
y
Answer:
1
2
is the coefficient for x and y and for xy it is 1
(vi)
0.3
a
–
0.6
a
b
+
0.5
b
Answer: 0.3 is the coefficient for a, for b there are two coefficients 0.6 and 0.5
Answered by
0
Step-by-step explanation:
5z + 2yz + 9yz - byz +10y +8y + 2zy - 62+ y +2zy - 32 = 5z +15zy - byz +19y - 94
15, - b
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