Question

Qual o valor de X e y ?​

Answer 1

Resposta:

${3x\over6}={2\over x+3}\\ \\ 3x(x+3)=6.2\\ \\ 3x^2+9x=12\\ \\ 3x^2+9x-12=0~~~\div(3)\\ \\ x^2+3x-4=0\\ \\ (x+4)(x-1)=0\\ \\ x+4=0~~~~~~~~~~~~~~~~~~x-1=0\\ x=-4~~n/serve~~~~~~~~~\fbox{ x=1 }\\ \\ \\ y=3x+6\\ y=3(1)+6\\ y=3+6\\ \\\fbox{ y=9 }$