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Subjects
Mathematics State Board
Class 9
Algebra
Algebraic identities
3.
Two mark example problems II
Exercise condition:
6
m.
Answer variants:
x
3
+
15
x
2
+
74
x
+
120
27
x
3
−
9
x
2
−
18
x
+
8
4
x
2
+
9
y
2
+
16
z
2
+
12
xy
+
24
yz
+
16
xz
1
. Expand \((2x + 3y + 4z)^2\).
Answer
:
\((2x + 3y + 4z) =\)
2
.
(i)
Expand \((x + 5)(x + 6)(x + 4)\).
Answer
:
\((x + 5)(x + 6)(x + 4) =\)
(ii)
Expand \((3x - 1)(3x + 2)(3x - 4)\).
Answer
:
\((3x - 1)(3x + 2)(3x - 4) =\)
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