ada yg tau gaa b,c sama d sekalian cara yaa makasii

c). √32 - 3√18 + √8 = √16.2 - 3√9.2 + √4.2
= 4√2 - 9√2 + 2√2
= -3√2
d). √18 -3√50 +2√32 =√9.2 -3√25.2 +2√16.2
=3√2 - 15√2 + 8√2
= -4√2