Respuesta :
hello :
x² – 14x + 49 =( x² -2(7)x+7²)-7²+49
x² – 14x + 49 = (x-7)²....(answer 2)
x² – 14x + 49 =( x² -2(7)x+7²)-7²+49
x² – 14x + 49 = (x-7)²....(answer 2)