7⁶-7⁴=117649-2401=115248/48=2401
4¹⁸+4¹⁶=68719476736+4294967296=73014444032/34=2147483648
<span>1) y(y-5)-7(y-5)=0 (y-5)(y-7)=0 y=5 или y=7</span>