Card 1 of 21
Why is 9\sqrt{9}9 not a surd?
A
The product of conjugates satisfies (a+b)(a−b)=a2−b\boxed{(a+\sqrt{b})(a-\sqrt{b})=a^2-b}(a+b)(a−b)=a2−b.
B
424\sqrt{2}42
C
32\frac{3}{2}23
D
It simplifies to the rational number 333.
Card 1 of 21
1.2.12 Use and manipulate surds Flashcards
21 flashcards on OCR (MEI) A Level Maths 1.2.12 Use and manipulate surds: the key formulae, methods and definitions you need to recall for Component 01, Component 02 and Component 03.