Surds

Hong Kong

Stage 1 - Stage 3

Which two of the following are "like surds"?

$4\sqrt{x}$4√`x`

A

$6\sqrt[3]{x^2}$6^{3}√`x`2

B

$\sqrt{5x}$√5`x`

C

$9\sqrt{x^2}$9√`x`2

D

$8\sqrt[3]{x}$8^{3}√`x`

E

$2\sqrt{x}$2√`x`

F

Easy

Less than a minute

Simplify the expression $7\sqrt{u}+3\sqrt{u}$7√`u`+3√`u`.

Simplify the expression $11\sqrt{u}-7\sqrt{u}$11√`u`−7√`u`.

Simplify the expression $8\sqrt{u}-10\sqrt{u}$8√`u`−10√`u`.

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