Question

responda o sistema a seguir​

Answer 1

${x}^{2} + {y}^{2} = 25 \\ 2x + y = 10 \\ \\ \sqrt{ {x}^{2} + {y}^{2} = 25 } \\ 2x + y = 10 \\ \\ x + y = 5 \\ 2x + y = 10 \\ \\ x + y = 5 \: \: \: \: \times ( - 1) \\ 2x + y = 10 \\ \\ - x - y = - 5 \\ 2x + y = 10 \\ \\ x = 5 \\ \\ 2x + y = 10 \\ 2 \times 5 + y = 10 \\ 10 + y = 10 \\ y = 10 - 10 \\ y = 0$