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anonymous
 4 years ago
If f(x) = x, for what value of x does f(x2) = f(x+2)?
anonymous
 4 years ago
If f(x) = x, for what value of x does f(x2) = f(x+2)?

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myininaya
 4 years ago
Best ResponseYou've already chosen the best response.2x2=x+2 It is asking you to solve this.

ParthKohli
 4 years ago
Best ResponseYou've already chosen the best response.0@CLester13 So, do you have a better way to say, "f(x  2) = f(x + 2)"?

ParthKohli
 4 years ago
Best ResponseYou've already chosen the best response.0If you think like a philosopher, something = something right?

ParthKohli
 4 years ago
Best ResponseYou've already chosen the best response.0Or, something = something or something = something Which leaves JUST ONE POSSIBILITY: x  2 is the opposite of x + 2, right?

ParthKohli
 4 years ago
Best ResponseYou've already chosen the best response.0Okay, answer this thing when you come online: How do you represent this sentence  "the opposite of x + 2"?

myininaya
 4 years ago
Best ResponseYou've already chosen the best response.2I would square both sides of x2=x+2 so I wouldn't need to worry about the absolute value. So perhaps you know how to solve this: \[(x2)^2=(x+2)^2\] Hint: Expand both sides. You will be in for a real treat.

ParthKohli
 4 years ago
Best ResponseYou've already chosen the best response.0That's a really cool way. :)
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