Question

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Expand :

1) (491)²

2) (289)²

Answer 1

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Solution :—
....................................

1) (491)²

= (500 - 9)²

= (500)² - 2.500.9 + (9)²

= 250000 - 9000 + 81

= 250081 - 9000

= 241081

.........................................................

2) (289)²

= (300 - 11)²

= (300)² - 2.300.11 + (11)²

= 90000 - 6600 + 121

= 90121 - 6600

= 83521

...................................................

Answer 2

$<b><font face=Copper black size=4>$Hiii Mate !!!

Soln 1) (500 - 9)²

= (500)² - 2.500.9 + (9)²

= 250000 - 9000 + 81

= 241081


⏺⏺⏺⏺⏺⏺⏺⏺⏺

Soln 2) (300 - 11)²

= (300)² - 2.300.11 + (11)²

= 90000 - 6600 + 121

= 83521