Math, asked by bbbsajannaan, 1 year ago

Evaluate the value of 22^2 - 21^2.

Answers

Answered by Anonymous

Answer:

$= > {(22)}^{2} - {(21)}^{2} \\ = > (22 + 21)(22 - 21) \\ = > 4 3 \times 1 \\ = > 43.$

Answered by Anonymous

Answer:

$( {20 + 2})^{2} - ({20 + 1})^{2} \\ \\ ( {x + y})^{2} = {x}^{2} + {y}^{2} + 2xy \\ \\ acc. \: to \: this \\ \\ (400 + 4 + 80 )- (400 + 1 + 40) \\ \\ 484 - 441 \\ \\ 43$

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Evaluate the value of 22^2 - 21^2.​

Answers

Evaluate the value of 22^2 - 21^2.