All categories

3 years ago

(5x^2 - 3x)(8x^2 + 4x)

Mathematics

1 answer:

timurjin [86]3 years ago

4 0

For this case we have the following expression:

$(5x ^ 2-3x) (8x ^ 2 + 4x)$

To find the product, we apply distributive property that states:

$(a + b) (c + d) = ac + ad + bc + bd$

So:

$(5x ^ 2) (8x ^ 2) + (5x ^ 2) (4x) - (3x) (8x ^ 2) - (3x) (4x) =\\40x ^ 4 + 20x ^ 3-24x ^ 3-12x ^ 2 =\\40x ^ 4-4x ^ 3-12x ^ 2$

ANswer:

$40x ^ 4-4x ^ 3-12x ^ 2$

You might be interested in

If you spin this spinner 30 times, how many times would you expect to get not get yellow?

Shkiper50 [21]

It would be a 1/5 chance so maybe 10

5 0

3 years ago

Find the value or X. Round your answer to the nearest tenth.

RSB [31]

Answer:

x = 9.3

Step-by-step explanation:

tan 25° = x/20

0.4663 = x/20

x = 9.3

5 0

3 years ago

A.100<br> B.80<br> C.50<br> D.20

katrin2010 [14]

Answer:

C. 50

Step-by-step explanation:

3 0

3 years ago

Solve, using the substitution method.

Dafna11 [192]

Hello there!

The question asks us to solve using the substitution method. The equations given are:

$2x+3y=1$

$y=x-8$

We are given a value for y, which is x-8. Substituting $y=x-8$ into the first equation of the system of equation gives us:

$2x+3y=1$

$2x+3(x-8)=1$

Use the distributive property to help simplify and solve for x

$2x+3x-24=1$

Combine like terms

$5x-24=1$

Add 24 to both sides

$5x-24+24=1+24$

$5x=25$

Finally, divide both sides by 5

$x=5$

Now, let's use $x=5$ in the equation $y=x-8$ to find the value of y

$y=x-8$

$y=5-8$

$y=-3$

Now, we have the values x=5 and y=-3. Putting these values into an ordered pair gives us the answer (5,-3), which is the last answer choice.

Let me know if you need any clarifications, thanks!

~ Padoru

5 0

4 years ago

Marcus hikes at a rate of 3 miles per hour. If he hikes for 7 and a half hours, how many miles will he hike?

sashaice [31]

The answer is 22.5 you multiply the 7 and the 3

6 0

4 years ago