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Byju's Answer
Standard VIII
Mathematics
Factors of Algebraic Expressions and Factorisation
Factorise:Eva...
Question
Factorise:
Evaluate {(7.8)
2
− (2.2)
2
}.
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Solution
We have:
7
.
8
2
-
2
.
2
2
=
7
.
8
+
2
.
2
7
.
8
-
2
.
2
=
10
×
5
.
6
=
56
∴
7
.
8
2
-
2
.
2
2
=
56
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