Oblicz: √3*√9 √5*√25 √20+√20+√20+5 [(√3²*√5*√5]:√25 (√3+√12+√75)*√3-5√3*√3 Proszę o pomoc bardzo proszę

3x9=27 5x25=125 20+20+20+5=65

√3*√9 = √3 * 3 = 3√3 √5*√25 =√5 *5 = 5√5 √20+√20+√20+5 =3√20 + 5 [(√3²*√5*√5]:√25 = (3 * 5) : 5 = 3 (√3+√12+√75)*√3-5√3*√3 = (√3 + 2√3 +5√3) * √3 -5*3= 8√3 *√3 - 15 =8*3 - 15 =24 - 15 = 9