Question

Решите уравнение (2х + 1)^2 - 4х^2 + 3 = 0

Answer 1

$(2x + 1)^2 - 4x^2 + 3 = 0 \\ 4x^2+4x+1-4x^2+3=0 \\4x+4=0 \\ 4x=-4 \\x=-1$