All categories

3 years ago

Which of the following is a root of the polynomial shown below f(x)=x^3+2x^2-x-2

Mathematics

2 answers:

nevsk [136]3 years ago

6 0

Answer:

Roots: -1, 1, -2

Step-by-step explanation:

Aleks [24]3 years ago

3 0

F(x) = x^3 + 2x^2 - x - 2
f(x) = x^2(x + 2) - (x + 2) 
f(x) = (x^2 - 1)(x + 2) 
f(x) = (x + 1)(x - 1)(x + 2) 
Roots: -1, 1, -2

You might be interested in

Solve for x. Show your work. 1 x<-12 2

Airida [17]

Answer:

2 is not a solution

Step-by-step explanation:

x < -12

Step 1: Check if 2 is less than -12

2 < -12

No, this doesn't work

Answer: 2 is not a solution

5 0

3 years ago

I don’t know how to set this up

kodGreya [7K]

Answer:

Step-by-step explanation:

Set it up as the following -

3:8 = x:24.

Now cross multiply - 3 * 24 = 8x

72 = 8x

Now divide both sides by 8.

9 = x

4 0

3 years ago

Which combination of shapes can be used to create the 3-D figure?

Leto [7]

Answer: Two regular octagons and eight congruent rectangles

Step-by-step explanation:

An octagon has 8 sides and the shapes on the bottom of the shape are 8 rectangles.

6 0

3 years ago

Read 2 more answers

Can someone help with an explanation? This is finding Surface Area.

Y_Kistochka [10]

The answer should be 95in^2

Explanation:

You’re essentially just finding the area of all the shapes on the triangle and adding them together.

Area of a triangle = 1/2•b•h
Area of a square = l•w or just s2

The area of the triangles given what we have in the diagram can be found with
1/2•5•7 = 17.5

There are 4 triangles so you multiply 17.5 by 4 which gives 70

The base of the triangle (the square) = 25

70+25=95

7 0

3 years ago

What is the quotient? URGENT!!

jeyben [28]

Answer:

The answer is A.

Step-by-step explanation:

You have to multiply by converting the second fraction into upside down :

$\frac{4x + 1}{6x} \div \frac{x}{3x - 1}$