1)
16. х
________ - __ = -1
(х-8) * (х+8) х-8
16-х * (х+8)
________ = -1
(х-8) * (х+8)
16-х²-8х
________ = -1
(х-8) * (х+8)
16-х²-8х= -(х-8) * (х+8)
16-х²-8х= -(х²-64)
16-х² - 8х= - х² + 64
16-8х=64
-8х=64-16
-8х=48
х=-6
2)
х. 36
___ - ____ = 0
х-6. х²-6х
х. 36
___ - ____ = 0
х-6. х*(х-6)
х²-36
_______ = 0
х*(х-6)
(х-6)*(х+6)
_______ = 0
х*(х-6)
х+6
___ = 0
х
х+6=0
х= -6