Question

корень ураанения (2x+1)^2-4x^2=7

Answer 1

(2х+1)^2-4x^2=7

4x^2+4x+1-4x^2=7

4x+1=7

4x=7-1

4x=6

x= 6/4

x=3/2 =1 1/2 или 1.5