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3 years ago

What formula should be used when factoring the expressionn x^3+27

Mathematics

1 answer:

kobusy [5.1K]3 years ago

5 0

x³ + 27 which can be written as x³ + 3³

It is in the form of a³ + b³ = ( a + b) ( a² - ab + b²)

x³ + 3³

= (x+ 3) (x² - x * 3 + 3²)

= ( x + 3 ) ( x² - 3x + 9)

Hope this helps you.

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What is 8 1/8 + 9 3/4?

tester [92]

Answer:

17 7/8

Step-by-step explanation:

8 1/8 = 65/8

9 3/4 = 39/4 = 78/8

8 1/8 + 9 3/4

= 65/8 + 78/8

= (65 + 78) / 8

= 143/8

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= (17*8)/8 + 7/8

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3 years ago

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3 years ago

Solve for b b-19=27 show how you got the answer

zlopas [31]

For $b-19=27$ value of b is 46 .

Step-by-step explanation:

An equation is a mathematical statement that two things are equal. It consists of two expressions, one on each side of an 'equals' sign.

An equation says that two things are equal. It will have an equals sign "=" like this: 7 + 2 = 10 − 1 That equation says: what is on the left (7 + 2) is equal to what is on the right (10 − 1) . So an equation is like a statement "this equals that" .

Here we have , b-19=27 or $b-19=27$ . Let's solve it step by step:

$b-19=27$

⇒ $b-19=27$

Adding 19 both sides

⇒ $(b-19)+19=27+19$