Question 43640
(5√[3] + √[5])(√[3] – 2√[5])
5√[9] + √[5]√[3] - 10√[15} - 2√[25]
5(3) + √[15] - 10√[15] - 2(5)
15 - 10 + √[15] - 10√[15]
5 - 9√[15]