3 years ago

F c(x) = 4x – 2 and d(x) = x2 + 5x, what is (C o D)(x)?

1 answer:

7 0

$\bf \begin{cases}
c(x)=4x-2\\\\
d(x)=x^2+5x
\end{cases}\qquad thus
\\\\\\
(c\circ d)(x)\implies 
\begin{array}{llll}
c(x)=&4x-2\\\\
c[\ d(x)\ ]=&4(dx)-2\\\\
c[\ \boxed{x^2+5x}\ ]= &4(\boxed{x^2+5x})-2
\end{array}$

distribute and simplify

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