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Byju's Answer
Standard VIII
Mathematics
Factorisation Using Algebraic Identities
Factorise: x2...
Question
Factorise:
x
2
+
8
x
+
16
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Solution
x
2
+
8
x
+
16
=
(
x
)
2
+
2
×
x
×
4
+
(
4
)
2
=
(
x
+
7
)
2
A
n
s
.
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Factorise:
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Q.
Factorise:
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Q.
The equation of the parabola with focus (0, 0) and directrix x + y = 4 is
(a) x
2
+ y
2
− 2xy + 8x + 8y − 16 = 0
(b) x
2
+ y
2
− 2xy + 8x + 8y = 0
(c) x
2
+ y
2
+ 8x + 8y − 16 = 0
(d) x
2
− y
2
+ 8x + 8y − 16 = 0