Surds Flashcards
1
Q
√x * √y
A
√xy
2
Q
√x / √y
A
√x/y
3
Q
a√x + b√x
A
(a+b)√x
4
Q
a√x - b√x
A
(a-b)√x
5
Q
a√x
A
√a2 * x
6
Q
√(ax+bx)
A
√(a+b)x
7
Q
√a + √b
&
√a - √b
A
DOES NOT =
√a+b
OR
√a-b
8
Q
Rationalise the denominator
1 / 2√7
A
1/2√7 * √7/√7
= 1*√7 / 2*7
= √7 / 14
9
Q
Rationalise the denominator
A
the conjugate of 2√7 - √5 is 2√7 + √5
SO…
