Respuesta :
7squareroot7-2squareroot28
=7squareroot7-2×2squareroot7
=7squareroot7-4squareroot7
=3squareroot7
=3×2.64
=7.92
=7squareroot7-2×2squareroot7
=7squareroot7-4squareroot7
=3squareroot7
=3×2.64
=7.92