find the range of values of x for each of the following inequalities x^2 + 2x +1 >0 (x+1)^2 > 0 (x+1) >0 x>1 how come the answer given is ( x is a subset of IR, x is not equal to -1)
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Hello, This is because (x+1)^2 > 0 is always TRUE. Unless (x+1)²=0, because it's , not And (x+1)²=0 if and only if x=... ?
Originally Posted by Moo Hello, This is because is always TRUE. Unless (x+1)²=0, because it's , not And (x+1)²=0 if and only if x=... ? ok thx for clarification. here is another question. (x-2)^2 (x+1) less than or equal 0 how to find the range of values of x x less than or equal to -1, while x=2 ( why)??
When then so so that gives you the solution. Otherwise and so whenever or when . Put them together: . So it's: "x less than or equal to -1, or x=2" not "x less than or equal to -1, while x=2".
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