Question

please tell me the answer of this question.

yes Himanshu you are right​

Answer 1

Answer:

Answer:-

x⁴+2x³-3x²-mx-2 =21

2⁴+2(2)³-3(2)²-m(2)-2 =21

16+16-12-2m-2=21

32-12-2-2m=21

-2m=21-18

-2 m = 3

m= -3/2

hope it's helped you siso......

it is my opinion only....