10.Find the square of the following numbers without actual multiplication.
i. 32 ii. 35 iii. 86
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Step-by-step explanation:
32²=(30+2)²
=30²+2²+2×30×2
=900 +4+120
=1024
35²=(30+5)²
30²+5²+2×30×5
900+25+300
1225
86²=(90-4)²
8100+16-2×90×4
8116-720
7396
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