Упрости выражение:
[tex] (\sqrt{14 } - 7)^{2} [/tex]
Которая из формул верна?

(а — b)^2 = а^2 – 2ab+b^2

Все ложны

(а — b)^2 = а^2 – 2ab — b^2

(а — b)^2 = а^2 - b^2​
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