Question

aflati solutia ecuatiilor
  (x-5)(x+5)-(x-3)²=x-9

Answer 1

(x-5)(x+5)-(x-3)^2=x-9

x^2-25-(x^2-6x+9)=x-9

x^2-25-x^2+6x-9=x-9

6x-x=-9+9+25

5x=25

x=25:5

x=5