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Mathematics
Patel
18 November, 20:20
0 = (x-1) ^2-4
show work <33
+3
Answers (
1
)
Marilyn Kline
18 November, 22:09
0
x=-1,3
Step-by-step explanation:
0 = (x-1) ^2-4
Add 4 to each side
0+4 = (x-1) ^2-4+4
4 = (x-1) ^2
Take the square root of each side
sqrt (4) = sqrt ((x-1) ^2)
±2 = x-1
Separate into 2 equations
2 = x-1 - 2 = x-1
Add 1 to each side
2+1 = x-1+1 - 2 + 1 = x-1+1
3 = x - 1 = x
There are two solutions
x=-1,3
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