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OpenStudy (kellyspeakslouder):
f(x) = 4x + 6, g(x) = 2x2 Find (fg)(x). A.8x3 + 12x2 B. 2x2 + 4x + 6 C. 8x + 12 D. 8x2 + 12x
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OpenStudy (blondie_b23):
Any ideas?
OpenStudy (kellyspeakslouder):
C?
satellite73 (satellite73):
multiply use parentheses
satellite73 (satellite73):
\[(4x+6)2x^2=?\]
OpenStudy (blondie_b23):
Multiply (4x+6)(2x^2)=8x^3+12x^2
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OpenStudy (blondie_b23):
What do you get?
OpenStudy (kellyspeakslouder):
so A?
OpenStudy (blondie_b23):
Yep :)
OpenStudy (blondie_b23):
Do you understand why?
OpenStudy (kellyspeakslouder):
thank you and yes, I can see how you'd get that. It makes soo much sense :)
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OpenStudy (blondie_b23):
Perfect!
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