5х(5х-1)-(5х+3)(5х-3)=х-3

Question

5х(5х-1)-(5х+3)(5х-3)=х-3

Answer 1

25x^2-5x-(25x^2-9)=x-3
25x^2-5x-25x^2+9=x-3
-5x+9=x-3
-5x-x=-3-9
-6x=-12
x=2