Cho ánh xạ tuyến tính f : R3--->R3 xác định bởi f(x1,x2,x3)= (x1+x2-x3,x1+x2-x3,x1+x2+2x3) Tìm cơ sở và số chiều của kerf

explanation:

previous steps have made pa≅ pb ≅ st ≅ su. setting the compass width to ab allows you to make tu the same length. then δstu ≅ δpab by the sss congruence postulate, and ∠p ≅ ∠s by the reason cpctc.

12r - 8 - 12

you have to combine like terms. below i have bolded the like terms:

12r - 8 - 12

together it combines to:

12r - 20

hope this !

the value of x is 28.2