1) (x – 4)(x + 4) –2(3x – 2) = (x – 4)2 в стпени
X^2-16-6x+4=x^2-8x+16 -16-6x+4=-8x+16 -12-6x=-8x+16 -6x+8x=16+12 2x=28 x=14