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BMI229
 2 years ago
Can someone please give me an example of a sum of cubes equation...Please
BMI229
 2 years ago
Can someone please give me an example of a sum of cubes equation...Please

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mathstudent55
 2 years ago
Best ResponseYou've already chosen the best response.1Can you do complex (imaginary) solutions, or only real solutions?

BMI229
 2 years ago
Best ResponseYou've already chosen the best response.1I just need an example worked out all the way.

mathstudent55
 2 years ago
Best ResponseYou've already chosen the best response.1Notice that 27 = 3^3, so this is the sum of the cube of x and the cube of 3. x^3 + 3^3 = 0 The first step is to factor it.

mathstudent55
 2 years ago
Best ResponseYou've already chosen the best response.1(x + 3)(x^2  3x + 9) = 0

mathstudent55
 2 years ago
Best ResponseYou've already chosen the best response.1Now to solve the equation, do x + 3 = 0 or x^2  3x + 9 = 0 The left side is x = 3. For the right side, use the quadratic formula.
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