All categories

2 years ago

-9x²(x²+2x²y - 3y²) Simplify

Mathematics

2 answers:

yKpoI14uk [10]2 years ago

4 0

<h2>Your answer is:</h2>

−9x^4−18x^4y+27x^2y^2

Dvinal [7]2 years ago

3 0

Answer:

=−18x^4y−9x^4+27x^2y^2

Step-by-step explanation:

(−9x^2)(x^2+2x^2y−3y^2)

=(−9x^2)(x^2+2x^2y+−3y^2)

=(−9x^2)(x^2)+(−9x^2)(2x^2y)+(−9x^2)(−3y^2)

=−9x^4−18x^4y+27x^2y^2

=−18x^4y−9x^4+27x^2y^2

---

Hope I helped! Have a great day :)

You might be interested in

A candy store makes a 13–pound mixture of gummy bears, jelly beans, and gobstoppers. The cost of gummy bears is $1.00 per pound,

bulgar [2K]

X = gummy bears, y = jelly beans, z = gobstoppers
x + y + z = 13
x + 2y + 2z = 20
x = 3y

3y + y + z = 13
4y + z = 13

3y + 2y + 2z = 20
5y + 2z = 20

4y + z = 13....multiply by -2
5y + 2z = 20
-----------------
-8y - 2z = -26
5y + 2z = 20
---------------add
-3y = -6
y = 2........2 lbs jelly beans

x = 3y
x = 3(2)
x = 6....6 lbs gummy bears

x + y + z = 13
6 + 2 + z = 13
8 + z = 13
z = 13 - 8
z = 5........5 lbs gobstoppers

so we have : 6 lbs gummy bears (x), 2 lbs jelly beans (y), and 5 lbs gobstoppers (z)

5 0

3 years ago

Read 2 more answers

The support for a window air-conditioning unit forms a triangle and an exterior angle. What is the measure of the exterior angle

Shalnov [3]

Let the exterior angle be y.

We know that the exterior angle is the sum of opposite two interior angles.

Therefore, y = 3x + 90 --- (1)

Also, y and 5x - 6 are linear pair.

Therefore, y + (5x - 6) = 180

Substituting y = 3x + 90 from (1), we get,

(3x + 90) + (5x - 6) = 180

8x + 84 = 180

8x = 180 - 84 = 96

x = 12 degrees

Hence, exterior angle y = 3(12) + 90 = 126 degrees.

8 0

3 years ago

Read 2 more answers

I HAVE 5 MINUTES LEFT HELPPPP PLEASE IM BEGGING!!!!

Nady [450]

Answer:

It is B and D

Step-by-step explanation:

They are both x and y functions

8 0

3 years ago

Juno ams Akima are training for a blathlon together. They are going to jog for the same amount of time as each other every day w

alexgriva [62]

Answer:3 hours

Step-by-step explanation:

Juno jogs at rate of 6 miles and bikes at rate of 14 miles covering total of 48 miles.

Akima jogs at rate of 8 miles and bikes at rate of 12 miles covering total of 44 miles.

Let jogging be represented by j

Let biking be represented by b

For Juno, 6j + 14b = 48 ......... i

For Akima, 8j + 12b = 44.......... ii

Multiply equation I by 8

Multiply equation ii by 6

48j + 112b = 384 ........... iii

48j + 72b = 264 ............. iv

Subtract equation iv from iii

48j + 112b = 384

- 48j + 72b = 264

40b = 120

b = 120/40

b = 3

Number of hours spent biking is 3 hours.

7 0

4 years ago

Read 2 more answers

What does 2m plus 5 equal

NemiM [27]

Answer:

look it up = dunce

Step-by-step explanation:

2====2

7 0

4 years ago