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Algebra and Applications Test 2
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© examsnet.com
Question : 19
Total: 40
For what value of a is the coefficient of
y
2
in the product (2y - 1) (y - h) (ay + 1) equal to 0 and the constant term equal to 2?
2
2/5
5/2
5
None of these
Validate
Solution:
👈: Video Solution
∵
(
2
y
−
2
)
(
y
−
h
)
(
a
y
+
1
)
=
2
a
y
3
+
(
2
−
2
h
a
−
a
)
y
2
+
y
(
h
a
−
1
)
+
h
According to the question,
2 - 2ha - a = 0
and h = 2
From equations, (i) and (ii), we get
2 - 4a - a = 0
⇒
a
=
2
5
© examsnet.com
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