Question

what formula applied in algebra

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Answer 1

Answer:

Here are some most commonly used algebraic identities: (a + b)2 = a2 + 2ab + b. (a - b)2 = a2 - 2ab + b. (a + b)(a - b) = a2 - b.

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Answer 2

Answer:

Here are some most commonly used formulas of algebra:

a2 - b2 =(a-b)(a+b)

(a+b)2 =a2 + 2ab + b. ...

(a-b)2=a2 - 2ab+b. ...

(x+a)(x+b)=x2+x(a+b)+a b.

(a+b+c)2=a2+b2+c2+2ab+2bc+2ca.

(a+b)3 =a3 +3a2b+3ab2 +b. ...

(a - b)3 =a3 - 3a2b+3ab2 - b.