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itsjustme_lol
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Let f(x) = x + 7 and g(x) = x – 2. What is f(x) • g(x)?
Azteck
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You're told f(x)= x+7.
That means that x+7 is the same as f(x).
Same goes for g(x).
So when they're asking you to multiply f(x) with g(x), what would you replace as f(x) and g(x)?
itsjustme_lol
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7 and -2?
Azteck
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Is 7 the same as f(x). What did I say is equal to f(x)?
itsjustme_lol
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x+7
Azteck
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So what would you replace as f(x)?
itsjustme_lol
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x+7? or 7x?
Azteck
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where'd you get 7x from?
Azteck
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Math is all about being realistic. If you did't know where you got 7x, then why would you even bring it out into thin air?
Azteck
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didn't*
Azteck
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x+7 is correct.
Azteck
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What would you replace g(x) then?
itsjustme_lol
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x-2
itsjustme_lol
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and sorry..im really horrible at math so i honestly didnt know...goodness lol
Azteck
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Okay that's correct though even if you're horriblea t math. You got it.
Azteck
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horrible at*
Azteck
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so then using what you just knew about f(x) and g(x):
\[f(x)\times g(x)=?\]
itsjustme_lol
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-14?
Azteck
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You didn't say anything about -14 beforehand, why now?
Azteck
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I'm just asking you to repeat what you said last time about what f(x) and g(x) is.
itsjustme_lol
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well because idk why i didnt..
itsjustme_lol
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ok, that make sense i think.
ok so if i got this right my answer would be x^2 + 5x – 14
Azteck
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Wowza, That's awesome! See, if you're actually thinking straight, you can do amazing things. That's absolutely correct!
itsjustme_lol
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why thank you :)