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Byju's Answer
Standard IX
Mathematics
(x±a)(x±b) = x²±(a+b)x+ab.
Expand the fo...
Question
Expand the following, using a suitable identity.
(
x
+
30
)
(
x
+
30
)
Open in App
Solution
We have,
(
x
+
30
)
(
x
+
30
)
=
x
2
+
30
x
+
30
x
+
900
=
x
2
+
60
x
+
900
Hence, this is the answer.
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(x±a)(x±b) = x²±(a+b)x+ab.
Standard IX Mathematics
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