Question

x³-2x²-7x+5 find the answer​

Answer 1

1/(2-√3)= 2+√3/1 = (2+√3)^3-( 2+√3)^2 - 7(2+√3) + 5=( 26+15√3) - (14 - 8√3)-(14 - 7√3) + 5 = 3 HENCE , PROVED.

Answer 2

Answer:

refer to this image hope it will help you