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Byju's Answer
Standard XII
Mathematics
Quadratic Equation
Simplify and ...
Question
Simplify and check if the following equation is a Quadratic equation.
(
x
+
5
)
3
=
x
3
−
8
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Solution
(
x
+
5
)
3
=
x
3
−
8
x
3
+
3
(
5
)
(
x
+
5
)
+
125
=
x
3
−
8
x
3
+
15
x
2
+
75
x
+
125
=
x
3
−
8
15
x
2
+
75
x
+
133
=
0
Yes, it is quadratic as the highest power of
x
=
2
.
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