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tatyana61 [14]
2 years ago
6

How to factorise 8a3-b3​

Mathematics
2 answers:
olasank [31]2 years ago
7 0

Answer:

(2a - b)(4a² + 2ab + b²)

Step-by-step explanation:

8a³ - b³ ← is a difference of cubes and factors in general as

a³ - b³ = (a - b)(a² + ab + b²) , thus

8a³ - b³

= (2a)³ - b³

= (2a - b)((2a)² + 2ab + b² ), that is

(2a - b)(4a² + 2ab + b²)

max2010maxim [7]2 years ago
5 0

Answer:

Step-by-step explanation:

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An amusement park sells child and adult tickets at a ratio of 3:1. On Saturday, they sold 63 adult tickets. How many child ticke
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Answer:

The number of child tickets sold by the amusement park is 189.

Step-by-step explanation:

Let A represent the number of adult tickets and C represents the number of child tickets, therefore we have:

3:1 = C:A .................... (1)

Where;

C = ?

A = 63

Substituting for the value into equation (1), we have:

3:1 = C:63

This can be converted to solve for C as follows:

3 / (3 + 1) = C / (C + 63)

3 / 4 = C / (C + 63)

0.75 = C / (C + 63)

0.75(C + 63) = C

0.75C + (0.75 * 63) = C

0.75C + 47.25 = C

47.25 = C - 0.75C

47.25 = 0.25C

C = 47.25 / 0.25

C = 189

Therefore, the number of child tickets sold by the amusement park is 189.

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