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20 13 new curriculum standard 2 math text
The first place is to solve an equation with t-2 as a variable through t+t/(t-2). The process of fitness is very simple. I don't understand.

The second problem is that 2x/2 has a minimum value when y is greater than or equal to 2 root signs. Because the minimum value of h(x) is two radicals, the range of values is as above. .

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