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Byju's Answer
Standard VIII
Mathematics
Algebraic Identities
Expand: 2t +...
Question
Expand:
(
2
t
+
5
)
(
2
t
−
5
)
Open in App
Solution
Given that:
(
2
t
+
5
)
(
2
t
−
5
)
=
2
t
(
2
t
−
5
)
−
5
(
2
t
−
5
)
=
4
t
2
−
10
t
−
10
t
+
25
Hence
4
t
2
−
20
t
+
25
is the correct answer
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1
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Q.
Use a formula to multiply.
(i) (x – 5)(x + 5)
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