Question

Упростить : 7/28 - /80 -2/63+3/45


/ - корень квадратный

Answer 1

7√28-√80-2√63+3√45=
=7×√7×4-√20×4-2√7×9+3√5×9=
=7×7√2-5√2-2×7√3+3×5√3=
=44√2-29√3