Solve square root of (2x-4) is greater than 4.
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sqrt(2x-4) > 4 Square both sides
2x-4 > 16 Add 4 to both sides
2x > 20 Divide both sides by 2
x > 10
2x-4 > 16 Add 4 to both sides
2x > 20 Divide both sides by 2
x > 10
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What about x=20?
If root (2x-4) has to be 5 or more, it has to be even so 6 is the least value.
6 squared is 36,
so if 2x-4=36
then 2x=40
and x=20
If root (2x-4) has to be 5 or more, it has to be even so 6 is the least value.
6 squared is 36,
so if 2x-4=36
then 2x=40
and x=20
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sqrt(2x-4)>4, first square both sides to yield: 2x-4>16, combine like terms: 2x >20, and divide by 2: x>10