Question

answer this for me.​

Answer 1

Answer:

x²-2x²-7x+5

=-x²-7x+5

= -[ 1/ 3-√8)]² -7(1/3-√8)+5

= - (1/9-8)-7(1/3-√8)+5

= -1-7/3-√8+5

= 4-7/3-√8

=12-4√8-7/3-√8

= 5-4√8/3-√8

=5-√128/3-√8

=5-11.313/3-2.82

= -6.313/0.18