culbertchristi85 culbertchristi85

14-03-2022
SAT

contestada

The identity a² – b² = (a + b)(a – b) is true for all values of a and b. Compute the whole number value of 2021² – 2020²

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jcherry99 jcherry99

14-03-2022

Answer:

Explanation:

Remark

The numbers here when subtracted, make 1.

ie 2021 - 2020 = 1

So all you have is 2020+2021 = 4041

(2021 - 2020)(2021 + 2020) = 4041

This doesn't work for every number you could choose, but it works for these 2.

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