x²+3x+2=(x-1)²+B(x-1)+C.求B,C

问题描述:

x&sup2+3x+2=(x-1)&sup2+B(x-1)+C.求B,C

(x-1)²+B(x-1)+C=x²-2x+1+Bx-B+C=x²+(B-2)+(1-B+C)=x²+3x+2;
B-2=3; B=5
1-B+C=2; C=6