Question

resolva os sistemas de equação

Answer 1

$\left \{ {{x-y=6} \atop { x^{2} + y^{2=26} }} \right. \left \{ {{(x-y=6).x} \atop { x^{2} + y^{2=26} }} \right. \left \{ {{ x^{2} -xy=6x} .....1 \atop { x^{2} + y^{2}=26 }.....2} \right ...1-...2$