Question

Дам 55балов кто решит

Answer 1

${(n + c)}^{2} = {n}^{2} + 2nc + {c}^{2}$

${(y + 4)}^{2}$

${(m + n)}^{2} = {m}^{2} + 2mn + {n}^{2} \\ {(2x + by)}^{2} = 4 {x}^{2} + 4xby + {b}^{2} {y}^{2}$

${( - x + y)}^{2} = {x}^{2} - 2xy + {y}^{2} \\ {( \frac{a}{2} + 1)}^{2} = \frac{ {a}^{2} }{4} + a + 1 \\ {(a + b + c)}^{2} = {a}^{2} + {b}^{2} + {c}^{2} + 2ab + 2ac + 2bc$