Ответ:
1)y=2(x-3)^2
0=2(x-3)^2
2(x-3)^2=0
(x-3)^2=0
x-3=0
x=3
2)y=√x-4
0=√x-4
-√x=-4
√x=4
x=16
0=√16-4
0=0
3)y=-|x+5|+2
0=-|x+5|+2
|x+5|=2
x+5=2
x+5=-2
x=-3
x=-7
x1=-7, x2=-3
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Ответ:
1)y=2(x-3)^2
0=2(x-3)^2
2(x-3)^2=0
(x-3)^2=0
x-3=0
x=3
2)y=√x-4
0=√x-4
-√x=-4
√x=4
x=16
0=√16-4
0=0
x=16
3)y=-|x+5|+2
0=-|x+5|+2
|x+5|=2
x+5=2
x+5=-2
x=-3
x=-7
x1=-7, x2=-3