Em um terreno retangular. com 25 metros de comprimento e 36 metros de largura, será separada uma região com o formato de um quadrado de lado medindo 7 metros para a construção de um jardim. A área restante do terreno mede: \( \begin{array}{ll}\text { A) } 951 \\ \text { B) } 949 \\ \text { C) } 900 \\ \text { D) } 851 \\ \text { E) } 849\end{array} \)

совместісти решить ее: а) по формулам Крамера; б) с по- мощью обратной матрицы (матричным методом); в) методом Гаусса. 1.1. \( \left\{\begin{array}{l}2 x_{1}+x_{2}+3 x_{3}=7, \\ 2 x_{1}+3 x_{2}+x_{3}=1, \\ 3 x_{1}+2 x_{2}+x_{3}=6 .\end{array}\right. \) 1.2. \( \left\{\begin{array}{r}2 x_{1}-x_{2}+2 x_{3}=3, \\ x_{1}+x_{2}+2 x_{3}=-4, \\ 4 x_{1}+x_{2}+4 x_{3}=-3\end{array}\right. \)

7) \( -\frac{7}{4}-\left(-\frac{3}{8}\right)+\left(-\frac{5}{2}\right)= \) 8) \( \frac{5}{2}+\left(-\frac{7}{4}\right)-\left(-\frac{1}{6}\right)= \)

Berel \( \mathbf{5} \boldsymbol{k}^{2} \)

(b) Smove the function \( g \) is defincal try \[ g(x)=\left\{\begin{array}{ll}k \sqrt{x+1}, & \text { for } 0 \leq x \leq 3 \\ m x+2 & \text { for } 3

Given that the polynomial function has the given zero, find the other zeros. \( f(x)=x^{3}-11 x^{2}+44 x-60 ; 3 \) The other zero(s) is/are \( \square \). (Do not factor. Use a comma to separate answers as needed. Express complex numbers in terms of \( i \). Type each