<span>А) |2х| = 3.
2х = 3, х = 3/2.
и 2х = -3, х = -3/2.
Б) |х+2| =7.
х + 2 = 7, х = 7 - 2 = 5,
х + 2 = -7 = -7 - 2 = -9.
В) |5х-8| = 0.
5х - 8 = 0.
х = 8/5.</span>
син 3.14/8/sin 3.14/16=sin 0.3925/sin 0.19625=2
(3х-1)² - 8(х+1)² = (х+2)(х-2)
9х²-6х+1 - 8(х²+2х+1) = х²-4
9х²-6х+1-8х²-16х-8 = х²-4
х²-22х-7 = х²-4
х²-х²-22х = -4+7
-22х = 3
х = 3 : (-22)
х =
Ответ:
.