Question

решите уравнение:(2х-5)^2-(2x-3)(2x+3)=0

Answer 1

$(2x-5)^2-(2x-3)(2x+3)=0 \ \ 4x^2-20x+25-4x^2+9=0 \ \ -20x+34=0 \ \ -20x=-34 \ \ x=-34 :(-20) \ \ x=1,7$