If m(x) = x3 and n(x) = √ 6 + x , find the function value, if possible. (m – n)(–5) a. –126 b. not a real number c. –124 d. 124

Given

... m(x) = x³

Based on the answer choices, we assume that

... n(x) = √(6+x)

as opposed to (√6) +x.

... (m-n)(-5)

The given notation indicates you are to find the difference of the two function values when each is evaluated for x=-5. Here, we'll evaluate both functions, then find the difference of the results.

... m(-5) = (-5)³ = (-5)(-5)(-5) = -(5³) = -125 . . . . . multiplying an odd number of minus signs gives a negative result

... n(-5) = √(6 -5) = √1 = 1

Then

... (m -n)(-5) = m(-5) -n(-5) = (-125) -(1) = -126

The appropriate choice is ...

... A. -126

5 pm

step-by-step explanation: