Expand and simplify(x+3)(4x2-x-8)

Mathematics

2 answers:

oksano4ka [1.4K]3 years ago

7 0

Answer:

4x3+11x2−11x−24

Step-by-step explanation:

(x+3)(4x2−x−8)

=(x+3)(4x2+−x+−8)

=(x)(4x2)+(x)(−x)+(x)(−8)+(3)(4x2)+(3)(−x)+(3)(−8)

=4x3−x2−8x+12x2−3x−24

=4x3+11x2−11x−24

igor_vitrenko [27]3 years ago

3 0

(x+3)(4x2-x-8) = -x(x+3)

Steps:
(x+3)(4x2-x-8)

Multiply the numbers: 4x2=8
= (x+3)(-x+8-8)

Simplify: 8-x-8: -x
= (x+3)(-x)

Remove parentheses: (-a) = -a
= -(x+3)x

You might be interested in

The 32 oz can

Agata [3.3K]

30 I think not sure tho

6 0

3 years ago

Describe how to decide if 94 is a prime number or composite number

algol [13]

94 is a composite number.

If 94 were a prime number, 94 would only have 2 factors, which are 1 and itself. Since 94 has another factor other than 1 and itself (which is 2), 94 is a composite number.

Hope this helps~

6 0

3 years ago

Read 2 more answers

anna wants to finish a 26.2 mile race in 5 hours. If she runs the first 3 hours of the race at a speed of 6 miles per hour, what

Oxana [17]

First off you need to multiply 6 by 3 for how many miles she went and then divide the leftover total by two (For the last two hours) to realize she needs to run 4.1 mph.

Hope this helped :)

3 0

3 years ago

A plane flying horizontally at an altitude of 1 mile and a speed of 510 mi/h passes directly over a radar station. Find the rate

sdas [7]

Answer:

442 miles

Step-by-step explanation:

Given

To properly solve this question, I illustrate some given parameters using attached image

From the image, apply Pythagoras theorem

$x^2 + 1^2 = y^2$