Разложите на множители многочлен: 16x^2 - 8x + 1 - 49y^2 Вычислите: 7,131^2 - 4,131^2
16x² -8x +1 -49y² =(4x-1)² - (7y)² =(4x -1-7y)(4x -1+7y) [ (4x-7y-1)(4x +7y-1) ] . ******************************************************************************************* 7,131² -4,131² =(7,131 - 4,131)(7,131+4,131) =3*11,262 =33,786.