bsweeney5223 bsweeney5223

09-01-2018
Mathematics

contestada

What are the real or imaginary solutions of the polynomial equation? 27x3 + 343 = 0?

Respuesta :

MANNYCARRILLO6 MANNYCARRILLO6

10-01-2018

use this sum of cubes to help you

(a^3+b^3)= (a+b)(a^2-ab+b^2)

a=3x and b=7 Plug into equation above and solve for x now you will get one real answer and two imaginary.
Do you understand or need more help?

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good job