2 years ago

The lengths of two sides of a triangle are shown below:

Mathematics

1 answer:

oksano4ka [1.4K]2 years ago

6 0

Part A

$3x^2 -2x-1+9x+2x^2 -3=\boxed{5x^2 + 7x-4}$

Part B

$(5x^3 +4x^2 - x-3)-(5x^2 + 7x-4)=\boxed{5x^3 - x^2 - 8x+1}$

Part C

No, because although they provide examples for specific polynomials being closed under addition and subtraction, there is a loss of generality.

You might be interested in

-2 x 4^5 + 18 x 4^5 = ? The answer must be in form of a^b. Please explain step by step.

zalisa [80]

Answer:

17*2^11

Step-by-step explanation:

Lets start by remembering two property of power.

$x^{m} * x^{n}= x^{n+m}$

$(x^{m})^{n}= x^{m*n}$

That is important to remember since 4= 2^2. Hence, the given problem can be written as the following

$-2*(2^{2} )^{5}+9*2^{2}*(2^{2} )^{5} \\-2*2^{10}+9*2^{2}*2^{10}\\ -2^{11}+9*2^{12}\\ -2^{11}(-1+9*2)=-2^{11} (17)$

5 0

3 years ago

The expression 21 - (2x + 3)2 + 4 (1 - 1) + z3 can be simplified into the form

mr Goodwill [35]

Answer:

A=z

B=-2

C=0

D=30

Step-by-step explanation:

First lets simply the equation

21 - (2x +3)2 + 4(1-1) + z^3

21 - (2x^2 + 9) + 4(0) + z ^3

21 - 2x^2 + 9 + z^3

- 2x^2 + z ^3 + 30

This means that:

A=z

B=-2

C=0

D=30

5 0

3 years ago

A railroad crew can lay 5miles of track each day. They need to lay 135 miles of track. The length, l (in miles), that is left to

torisob [31]

What is the function

4 0

3 years ago

Please answer to those (a+2)(a+2) (b+7)(b+7) (c-3)(c-3)

oksano4ka [1.4K]

Answer: 1. a^2 + 4a + 4

2. b^2 + 14b + 14

3. c^2 -6c + 9

5 0

3 years ago

Read 2 more answers

What number is in the middle of 25 and 50?

Firdavs [7]

(50-25)/2
25/2
12.5
25+12.5=37.5

6 0

3 years ago

Read 2 more answers