The Student Room Group

Math

How do I do surds
Original post by Lillara
How do I do surds
Give me a question to do
a x √b = a√b
example: 3 x √2 = 3√2

√a x √b = √ab
example: √2 x √2 = √4

√a x √a = a
example: √3 x √3 = 3

a√b x c√d = ac√bd
example: 2√3 x 3√4 = 6√12

Quick Reply