4x^2-(2x-1)^2=15решите уравнение

Question

4x^2-(2x-1)^2=15
решите уравнение

Answer 1

4x^2-(2x-1)^2=154x^2-(4X^2-4X+1)-15=0
4X^2-4X^2+4X-1-15=0
4X-16=0
4X=16
X=4

Answer 2

4х^2-(2x-1)^2=15
4x^2-(4x^2-4x+1)=15
4x^2-4x^2+4x-1=15
4x=16
x=4