Question

Пожалуйста решите, срочно!

Answer 1

(4-7х²)/(2-х)-6х²/(2-х)=(4-7х²-6х²)/(2-х)=(4-13х²)/(2-х)=(4-13*(-3/4)²)/(2+3/4)=
=(4-(13*9)/16)/(11/4)=(72-117)*4/16*11=-45/44=-1 1/44