Thực hiện phép tính: 4.5^2−6.3^2 4.5^2−6.3^2=22.5^2−6.3^2=72−6.3^2=42.6=96

A. 4.$5^2$−6.$3^2$= 22.$5^2$−6.$3^2$ = 72−6.$3^2$ = 42.6 = 96

B. 4.$5^2$−6.$3^2$ = 202−182 = $2^2$= 4.

C. 4.$5^2$−6.$3^2$ = 4.25−6.9 = 100−54 = 46

D. 4.$5^2$−6.$3^2$ = 4.25−6.9 = 4.19.9 = 684