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4 years ago

Find the sum (x^3+3x^2+x+1)+(2x^3-2x^2-2x+2)

Mathematics

2 answers:

8_murik_8 [283]4 years ago

7 0

Answer:

The sum = 3x³ + x² - x + 3

Step-by-step explanation:

It is given that,

(x³ + 3x² + x + 1) + (2x³ - 2x² - 2x + 2)

<u>To find the sum</u>

(x³ + 3x² + x + 1) + (2x³ - 2x² - 2x + 2)

= x³ + 2x³ + 3x² - 2x² + x - 2x + 1 +2

= 3x³ + x² - x + 3

Therefore the sum = 3x³ + x² - x + 3

Iteru [2.4K]4 years ago

3 0

Answer:

(x^3+3x^2+x+1)+(2x^3-2x^2-2x+2)

3x^3 + x^2 - x + 3

I think I simplified it completely. Hope this helps! Good luck! :)

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3 years ago

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Answer:
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Explanation:
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3 years ago

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What is the area of the composite figure? (use 3.14 for pi). Explain how you arrived at your answer. Please round to the nearest

maksim [4K]

The area of the given diagram is 29.817 square centimeters. The given diagram is combination of rectangle and semi circle.

Step-by-step explanation:

The given is,

Given diagram is combination of Rectangle and Semi circle.

Step:1

Res the attachment,

Area of given diagram = Area of A + Area of B..............(1)

Step:2

For A,

The A section in the given diagram is semi circle,

Diameter of semi circle = Total distance - ( 2+3)

( ∵ 2, 3 are top distance in the given diagram)

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r = 2.5 cm

Area, $A_{A} = \frac {\pi r^{2} }{2}$ ........................(2)

$A_{A} = \frac {\pi (2.5)^{2} }{2}$

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$A_{A} = 9.8174 cm^{2}$

Step:3

For B,

Area of rectangle is,

$A_{B} =lb$ .....................(3)

Where, l - Length = 10 cm

b - Width = 2 cm

Equation (3) become,

$= (10)(2)$

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Area of B, $A_{B}$ = 20 $cm^{2}$

Step:4

From the equation (1),

Area of given diagram = 20+ 9.81747

Area = 29.817 square centimeters

Result:

The area of the given diagram is 29.817 square centimeters. The given diagram is combination of rectangle and semi circle.

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