Question

упростить:

7√28 - √80 - 2√63 + 3√45

Answer 1

7√28=7√7*4=7*2√7=14√7

2√63=2√7*9=6√7

√80=√5*16=4√5

3√45=3√9*5=9√5

7√28 - √80 - 2√63 + 3√45=5√5+8√7