16 minus 1 equals 15, 25 minus 4 equals 21, and N is the rule

n^2-m^2=(n+m)(n-m)
This is the square difference formula. I learned it in grade one

RELATED INFORMATIONS

1. 6X plus 37 is 7 times (x minus 14)?
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4. -What is 9 out of 16 * - 25 * - 8 out of 27?
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