If $m ( x ) = x ^ { 3 }$ and $n ( x ) = \sqrt { 6 + x }$ find the function value, if possible. $( m - n ) ( - 5 )$
A) $- 126$
B) 124
C) $- 124$
D) Not a real number

Question

Quizplus · Accepted Answer

To find $(m - n)(-5)$, we first evaluate $m(-5)$ and $n(-5)$, then subtract the latter from the former. $m(-5) = (-5)^3 = -125$ and $n(-5) = \sqrt{6 + (-5)} = \sqrt{1} = 1$. Thus, $(m - n)(-5) = -125 - 1 = -126$.

If m(x)=x3m ( x ) = x ^ { 3 }m(x)=x3

If $m ( x ) = x ^ { 3 }$