SacrificeMe SacrificeMe

20-03-2018
Mathematics

contestada

Suppose g(x)=f(2x) when f(x)=x^2-4x-5. Find the standard expression for g(x).
Please show steps.

Respuesta :

calculista calculista

29-03-2018

we have that

f(x)=x²-4x-5 g(x)=f(2x)

step 1
find --------> f(2x)
that means that the variable is now going to be 2x instead of x
so
f(2x)=(2x)²-4(2x)-5------------> 4x²-8x-5

therefore

f(2x)=4x²-8x-5
and
g(x)=4x²-8x-5

the answer is
g(x)=4x²-8x-5

Answer Link

Otras preguntas

Who is Princess Diana? Where was she born? How old was she when she died? Was she a kind person?

What was the interest rate in 2002?

Find the value of x.

Here are the ratios of cats to dogs in different kennels in the city.In each case, state which kennel has the greater number of dogs.a) Kennel A, 5:6 or Kennel

solve using comparison method. a. 2x + 3y = 17 and 3y = 15 - x

Select the value of k that makes 5x^3 + kx^2-2x-12 factorable by grouping?A. 15B. -15C. 30D. -30

sally took antibiotics for several weeks. how would your gut react to the antibiotics after that long

HELP!! f + 1/4 = - 14/4 find 'f'

Divide the sum of 3/4 and −4/7 by their difference

A student rolled 8 number cubes and counted the total amount of even numbers to simulate the number of questions she might guess correctly on a true/false test