4x^2-(2x-1)^2=15

Question

4x^2-(2x-1)^2=15

Answer 1

4х^2 -4х^2 + 4х -1=15
4х-1=15
4х=16
х=4
Ответ:4 
Удачи:)

Answer 2

4x ²-4x ²+ 4x-1=15
4x=16
x=4