Question 874029
(f-g)(4) means f(4) - g(4). So we need to calculate f(4) and g(4) first


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f(x) = 4x - 3


f(4) = 4(4) - 3


<font color="blue">f(4) = 13</font>


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g(x) = x^3 + 2x


g(4) = (4)^3 + 2(4)


<font color="purple">g(4) = 72</font>


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(f-g)(4) = f(4) - g(4)


(f-g)(4) = <font color="blue">f(4)</font> - <font color="purple">g(4)</font>


(f-g)(4) = <font color="blue">13</font> - <font color="purple">72</font>


(f-g)(4) = <font color="red">-59</font>


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Final Answer:


(f-g)(4) = <font color="red">-59</font>