(32-2x)(24-2x)=(32+24)/2
3个回答

(32-2x)(24-2x)=(32+24)/2

(32-2x)(24-2x)=56/2

(32-2x)(24-2x)=28

2(16-x)(24-2x)=28

(16-x)(24-2x)=14

2(16-x)(12-x)=14

(16-x)(12-x)=7

x^2-28x+192=7

x^2-28x+185=0

x^2-28x+196-196+185=0

(x-14)^2-11=0

(x-14-√11)(x-14+√11)=0

x=14+√11或x=14-√11