выберите правильное утверждение:
а)
[tex] {a}^{2} + {b}^{2} - 2ab = {(a - b)}^{2} [/tex]
б)
[tex] {m}^{2} + 2mn - {n}^{2} = {(m - n)}^{2} [/tex]
в)
[tex]2pt - {p}^{2} - {t}^{2} = {(p - t)}^{2} [/tex]
г)
[tex]2cd + {c}^{2} + {d}^{2} = {(c + d)}^{2} [/tex]
укажите соответствествие (цифра-буква)


пожалуйстаа!!!​
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