Question

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (c circle d) (x)?
4x3 + 18x2 – 10x
x2 + 9x – 2
16x2 + 4x – 6
4x2 + 20x – 2

Answer 1

The right answer is: $4x^2+20x-2$

Step-by-step explanation:

Given functions are:

$c(x) = 4x-2\\d(x) = x^2+5x$

The composition means to put the other function in place of variable.

We have to find composition of two functions (cod)(x)

$(c\ circle\ d)(x) = c(d(x))\\so,\\c(d(x)) = 4(d(x)) -2\\= 4(x^2+5x) -2\\= 4x^2+20x-2$

Hence,

The right answer is: $4x^2+20x-2$

Keywords: Functions, composition

Learn more about functions at:

• brainly.com/question/5527192
• brainly.com/question/5510873

#LearnwithBrainly

Answer 2

Answer:

4$x^{3}$ + 18$x^{2}$ – 10x

I hope this helps :)