(2x-5)^2-36=0 решите (5z-3)^2-9z^2=0
(2x-5)²-36=0 (2x-5)²=36 2x-5=6 и 2х-5=-6 2х=11 2х=-1 х=11/2 х=-1/2 х₁=5,5 х₂=-0,5 (5z-3)²-9z²=0 (5z-3)²-(3z)²=0 (5z-3-3z)(5z-3+3z)=0 (2z-3)(8z-3)=0 2z-3=0 или 8z-3=0 2z=3 8z=3 z₁=1,5 z₂=3/8