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2 years ago

What is a difference of squares with a factor of (3x + 7) ?

Mathematics

1 answer:

Inga [223]2 years ago

7 0

Answer:

9x² - 49

Step-by-step explanation:

A difference of squares factors in general as

a² - b² = (a + b)(a - b)

Given (3x + 7) with a = 3x and b = 7

Then the other factor is (3x - 7)

(3x + 7)(3x - 7)

= (3x)² - 7²

= 9x² - 49

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Complete factorization

Lostsunrise [7]

Answer:

A. 2x + 1

Step-by-step explanation:

6x³ - 15x² - 9x

3x (2x² - 5x - 3)

3x (2x² + x - 6x - 3)

3x (x (2x + 1) - 6x - 3)

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

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

one of the factor of the complete factorization is A. 2x + 1

5 0

2 years ago

Read 2 more answers

Which expression is equivalent to 28(15+9) ?

Licemer1 [7]

You would use PEMDAS Parentheses, Exponents, Multiplication/Division, Addition/Subtraction. So first we would use P in PEMDAS witch is 15+9=24

Then you would use Multiplication 24 x 28 = 672

So your answer would be 672

8 0

2 years ago

Solve for x in simplest form. 3=7/2(3x−4)

polet [3.4K]

Answer:

x = 34/21

Step-by-step explanation:

3 = 7/2 (3x-4)
3 = (21/2)x - 28/2
3 = (21/2)x - 14
(21/2)x = 17
21x = 34
x = 34/21

6 0

2 years ago

Read 2 more answers

Solve all please and show ALLLL steps

ratelena [41]

Answer:

Step-by-step explanation:

8b - 7 = 7b - 2

Bringing like terms on one side

8b - 7b = - 2 + 7

B = 5

-12 + 5k = 15 - 4k

Bringing like terms on one side

5k + 4k = 15 + 12

9k = 27

k = 27/9 = 3

7 0

3 years ago

Which of the following expressions represents "three times the difference between t and y"?

ioda

Hi the awnser is 3(t-y) because you always do the math that is in the parentheses first!

6 0

3 years ago