Respuesta :

Answer: A≈101.39 or round to 101

Step-by-step explanation: A=ah+bh+ch+1

2﹣a4+2(ab)2+2(ac)2﹣b4+2(bc)2﹣c4=6·4+5·4+7·4+1

2·﹣64+2·(6·5)2+2·(6·7)2﹣54+2·(5·7)2﹣74≈101.39388