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Ber [7]
3 years ago
15

Which polynomial identity will prove that 16=25-9?

Mathematics
1 answer:
leva [86]3 years ago
5 0
A^2-b^2 = (a+b)(a-b)
5^2-4^2 = (5+4)(5-4)
25-16 = 9
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An investor invests $500 in a certain stock. After the first six months, the value if the stock has increased at a rate of $20 p
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I cannot draw a graph so im going to explain 
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Q. # 15 please help to solve
navik [9.2K]
Since
 18x^3=2\cdot 3\cdot 3\cdot x\cdot x\cdot x \\  \\ 30x^5=2\cdot 3\cdot 5\cdot x\cdot x\cdot x\cdot x\cdot x
you can see that common expression is 
2\cdot 3\cdot x\cdot x\cdot x=6x^3.
Answer: Correct choice is A.
5 0
3 years ago
What is the product of 2x -5 and 3x^2 + 5x - 7? Write your answer in standard form. A. Show your work. B. Is the product of 2x -
VikaD [51]

Answer:

A)What is the product of 2x -5 and 3x^2 + 5x - 7? Write your answer in standard form.

6x³ - 5x² - 39x + 35 = 0

B. Is the product of 2x -5 and 3x^2 + 5x -7 equal to the product of 5x - 2 and 3x^2 + 5x - 7?

No it is not.

Step-by-step explanation:

A)What is the product of 2x -5 and 3x^2 + 5x - 7? Write your answer in standard form.

(2x - 5) (3x² + 5x - 7)

= 2x(3x² + 5x - 7) -5(3x² + 5x - 7)

= 6x³ + 10x² - 14x -15x² - 25x +35

Collecting like terms

= 6x³ +10x² - 15x² - 14x - 25x +35

= 6x³ - 5x² - 39x + 35

In standard form

6x³ - 5x² - 39x + 35 = 0

B. Is the product of 2x -5 and 3x^2 + 5x -7 equal to the product of 5x - 2 and 3x^2 + 5x - 7?

First we find the product of

5x - 2 and 3x² + 5x - 7?

(5x - 2) (3x² + 5x - 7)

5x(3x² + 5x - 7) -2(3x² + 5x - 7)

15x³ + 25x² - 35x - 6x² -10x + 14

Collect like terms

15x³+ 25x² - 6x² -35x - 10x + 14

15x³ + 19x² - 45x + 14 = 0

Hence, the product of 5x - 2 and 3x^2 + 5x - 7

= 15x³ + 19x² - 45x + 14 = 0

The product of 2x -5 and 3x^2 + 5x -7 = 6x³ - 5x² - 39x + 35 = 0

Comparing both products, we can see that

The product of 2x -5 and 3x^2 + 5x -7 ≠ the product of 5x - 2 and 3x^2 + 5x - 7

6 0
3 years ago
Solve each equation -3(n+5)=27
MrRissso [65]

Answer:

n = − 14

Step-by-step explanation:

-3(n+5)=27

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Please mark me brainliset if this helped (I need it)

4 0
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A beverage is made by mixing two parts of water with three part of fruit juice. How many parts of water are mixed with one part
frosja888 [35]

Answer:

2/3

Step-by-step explanation:

good luck !!

3 0
3 years ago
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