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Can you show me how to do this problem?? Find s(q+2) for s(x)=x^2+5x+2.?
thank you all so much
3 Answers
- 1 decade agoFavorite Answer
The problem is a function.
That means that wherever you see the x, you have to replace it with q + 2.
s(x) = x^2 + 5x + 2
s(q + 2) = (q + 2)^2 + 5(q + 2) + 2
s(q + 2) = q^2 + 4q + 4 + 5q + 10 +2
s(q + 2) = q^2 + 9q + 16
- Anonymous1 decade ago
Okay, what you need to do is replace x everywhere it appears in the formula with q+2.
So you have
(q+2)^2 +5(q+2) +2
Multiply everything out:
q^2 +4q + 4 + 5q +10 +2
and then add together the similar terms, so all the q^2 are together, all the q, and all the constants. I'll leave that bit to you.
- 1 decade ago
This problem basically says substitute x for q+2
this means
s(q+2) = (q+2)^2 + 5(q+2) + 2
you can solve that out.