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ladessa [460]
3 years ago
14

What is the product of the polynomials below? (3x2 - 2x - 3)(5x2 + 4x + 5)

Mathematics
2 answers:
Vitek1552 [10]3 years ago
8 0

Answer

15x^4+2x^3+8x^2-15

Phoenix [80]3 years ago
7 0

Answer:

15^4+2^3−8^2−22−15

Step-by-step explanation:

(3^2−2−3)(5^2+4+5)

Distribute:

<u>3(5^2+4+5)</u> ⋅ ^2−2(5^2+4+5) − 3(5^2+4+5)

15^4+12^3+15^2 <u>− 2(52+4+5)</u> − 3(52+4+5)

15^4+12^3+15^2 − 10^3−8^2−10 <u>− 3(52+4+5</u>)

15^4+12^3+15^2 − 10^3−8^2−10 − 15^2−12−15

Combine like terms:

15^4<u>+12^3−10^3</u>+15^2−8^2−15^2−10−12−15

15^4+2^3<u>+15^2−8^2−15^2</u>−10−12−15

15^4+2^3−8^2<u>−10−12</u>−15

15^4+2^3−8^2−22−15

15^4+2^3−8^2−22−15

hope it helps :)

please mark brainliest!

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svetoff [14.1K]

Answer:

x = 5

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Step-by-step explanation:

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2 years ago
An 18-meter-tall cylindrical tank with a 4-meter radius holds water and is half full. Find the work (in mega-joules) needed to p
Sliva [168]

Answer:

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W = 226290 x 9.8 x 9

W = 19958778Joules

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Step-by-step explanation:

Work to full the tank is

W = mgh.

m is the mass of the water.

But density = mass/volume, where volume is the volume of the complete the remaining half full of water to fill the cylindrical tank.

mass = density x volume.

Volume of cylinder = πr2h

Volume to fill the cylinder = (πr2h)/2.(half of total volume)

Volume = (22x4x4x9)/(7x2). Height used is 18/2 = 9m

Volume = 226.29m3.

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7 0
2 years ago
The perimeter of a rectangular painting is 364cm . If the length of the painting is 96cm, what is its width?
hram777 [196]

Answer:

The width would be 86cm

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Length is 96, multiply by 2 : 96*2 = 192

Subtract this from the total perimeter (364-192 = 172)

Divide this by 2 to get 1 width value (172/2 = 86)

86 cm

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3 years ago
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Step-by-step explanation:

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Answer:

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5 0
3 years ago
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