Question

Find the square without actual multiplication of 65,205,93,58​

Answer 1

Solution: 93
2
=93×93=8649
To make calculations easy, use the following approach:
93=(90+3)
So, 93
2
=(90+3)
2
=90
2
+2×3×90+3
2

=8100+2×270+9=8649

Answer 2

Step-by-step explanation:

Find the square without actual multiplication of 65,205,93,58

Solution: 93

2

=93×93=8649

To make calculations easy, use the following approach:

93=(90+3)

So, 93

2

=(90+3)

2

=90

2

+2×3×90+3

2

=8100+2×270+9=8649

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