3 years ago

Given f(x) = 4x4 + 5x3 – 15x2 – 45, find f(–3).

Mathematics

2 answers:

poizon [28]3 years ago

6 0

Answer:

f(–3) = 9

Step-by-step explanation:

Given f(x) = 4x^4 + 5x^3 – 15x^2 – 45

f(-3) means let x = -3

f(-3) = 4(-3)^4 +5(-3)^3 – 15(-3)^2 – 45

=4(81) +5(-27) -15(9) -45

= 324 - 135 - 135 -45

mars1129 [50]3 years ago

5 0

Answer:

The answer is C.

Step-by-step explanation:

You might be interested in

How do i check an equation for extraneous solutions?

Marina86 [1]

Example:

$\sqrt x(x+1)=0$

This suggests two solutions, $x=0$ and $x=-1$ .

However, upon plugging these solutions back into the equation, you get

$\sqrt0(0+1)=0(1)=0$

which checks out, but

$\sqrt{-1}(1-1)=0$

does not because $\sqrt x$ is defined only for $x\ge0$ (assuming you're looking for real solutions only). So, we call $x=-1$ an extraneous solution, and the complete solution set (over the real numbers) is $x=0$ .

7 0

2 years ago

Read 2 more answers

Work out the mean for the data set below: 5, 3, 3, 6, 2, 5, 2, 4, 7 Give your answer as a fraction in its simplest form.

olga nikolaevna [1]

Answer:

4 1/9

Step-by-step explanation:

Add all of them together. you get 37. Then divide them by how many numbers. You get 4.111 repeating. I then just turned that into a fraction and got 4 1/9

3 0

3 years ago

10x-2x in fewer terms

Aleks04 [339]

Answer:

Step-by-step explanations:

10x - 2x

5 0

2 years ago

The altitude on a ski trail drops 2 feet for

Trava [24]

Answer:

rrrrrehwhwjwmkwwuwiwiiwiwiwiw

6 0

3 years ago

I need help plz find m M

Firlakuza [10]

Answer:

60°

I think that answer

8 0

3 years ago