Sederhanakan bentuk berikut:a).√125-√45+√20 b).√32-√18
A. √125 = √25.5, √45 = √9.5, √20 = √4.5
5√5-3√5+2√5 = 4√5
B. Kurang tau aku
A). √125 = √25 x 5 = 5√5
√45 = √9 x 5 = 3√5
√20 = √4 x 5 = 2√5
√125 - √45 + √20 = 5√5 – 3√5 + 2√5 = (5-3+2)√5 = 4√5
b). √32 = √16 x 2 = 4√2
√18 = √9 x 2 = 3√2
√32 - √18 = 4√2 – 3√2 = (4-3)√2 = √2