Find three consecutive numbers whose cubes have a sum of 2241

Let "x" be the first integer:

Second integer would be x+1,

Third integer would be x+2,

Using the formula;

x³ + (x+1)³ + (x+2)³ = 2241

x³ + x³ + 3x² + 3x + 1³ + x³ + 6x² + 12x + 2³ = 2241

3x³ + 9x² + 15x + 9 = 2241

dividing the whole equation by 3;

x³ + 3x² + 5x + 3 = 747

x³ + 3x² + 5x = 747 - 3

By graphing this equation, we can see that there is only 1 real root,

that is:

x = 8

Hence,

b.) divide by -5.

step-by-step explanation:

no

step-by-step explanation:

2-7=-5

7-2=5

when you combing like terms for ech expression, 5 and -5. these numbers are not equal to each other.