1.

(a-b) 2 = a 2 - 2 ab​

Answer»

ong>Answer:

B^2

(a-b)^2=a^2-2ab+b^2

Prove;

(a - b)^2 =

(a - b)(a - b) =. Now use FOIL to multiply.

a^2 - AB - BA + b^2 =

a^2 - 2ab + b^2

Note the - sign on the second term.


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