Question

х+3/х-7 - 10/х+7 = 140/ х²-49

Answer 1

(X+3)/(X-7)-10/(X+7)=140/(X^2-49)

 

  (X+3)/(X-7)-10/(X+7)=140/(X+7)(X-7)

(X+3)^2-10(X-7)=140

X^2+6X+9-10X+70-140=0

X^2-4X-61=0