Question

Resolva o sistema de equação

xy+ 5 = 14 - x
x2 - 0 = 0

Answer 1

1 Subtract xyxyxy from both sides  5=14−x−xy5=14-x-xy5=14−x−xy  2 Subtract 141414 from both sides  5−14=−x−xy5-14=-x-xy5−14=−x−xy  3 Simplify  5−145-145−14 to −9-9−9 −9=−x−xy-9=-x-xy−9=−x−xy  4 Factor out the common term xxx  −9=−x(1+y)-9=-x(1+y)−9=−x(1+y)  5 Divide both sides by  1+y1+y1+y −91+y=−x-\frac{9}{1+y}=-x− ​1+y ​ ​9 ​​ =−x  6 Multiply both sides by  −1-1−1 91+y=x\frac{9}{1+y}=x ​1+y ​ ​9 ​​ =x  7 Switch sides  x=91+yx=\fração{9}{1+y}x= ​1+yyy ​ ​9/1+y    X2-0=0  ×2=0  ×=0