Question

if theproduct of two numbers are 8 and 15 respectively, find the sum of their cubes
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Answer 1

Answer:

152

Step-by-step explanation:

Given,

x + y = 8 and,

xy = 15

x and y are the factors of 15.

Factors of 15 are 1, 3, 5, 15.

15 * 1 = 15

5 * 3 = 15

We can see that 5 + 3 = 8

Therefore, x = 5

y = 3

cube of 3 = 3 * 3 * 3 = 27

cube of 5 = 5 * 5 * 5 = 125

sum of 3 cube and 5 cube = 125 + 27 = 152

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