Question

please solve this question... It's urgent guys... please​

Answer 1

Answer:

q1 is easy x=-2

so total of inverse cubes is- 2× 1/8= -1/4

q2

clearly imaginary roots because D < 0

by completing the square method

so I changed the question:

and answer is in photo

Answer 2

Answer:

Thank you so much for your help . thank you , thank you, thank you , thank you, thank you