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OpenStudy (anonymous):
Let f(x) = 5x + 4 and g(x) = 4 - x. Find f(x) . g(x)
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OpenStudy (angela210793):
do it same as i did the other one
OpenStudy (rulnick):
(5x+4)(4-x) By FOIL, = 5x(4) + (5x)(-x) + 4(4) + 4(-x) Need more help than that?
OpenStudy (rulnick):
= 20x - 5x^2 + 16 - 4x = -5x^2 + 16x + 16
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