Question

find 89 square please solve my problem with explain ​

Answer 1

Answer:

89×89

=7921

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Answer 2

Answer:

7921

Step-by-step explanation:

89=90-1

so (89)^2=(90-1)^2

using the identity (a-b)^2

we get ,,,. (90)^2+(1)^2-2×(90×1)

(8100)+1-180

7921

square of 89 is 7921