Math, asked by farhina1017, 5 months ago

find the square of 9 with the help of formula.

Answers

Answered by sumaiya298

1

Step-by-step explanation:

9²=(10-1)²

=10²+1²-2(10)(1)

=100+1-20

=81

Answered by dagaritisha

0

Answer:

Step-by-step explanation:

9²=(10-1)²

=10²+1²-2(10)(1)

=100+1-20

=81

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