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0:03:13

Use the area of a triangle to find a length.

0:03:35

Use Pythagoras' theorem twice where a right-angled triangle is inscribed into another.

0:02:47

Use Pythagoras' theorem to find the area of a triangle.

0:02:53

Use Pythagoras' theorem to solve problem involving movement in cardinal directions.

0:02:43

Expand a single bracket with surds, where simplification of surds is required.

0:02:37

Multiply or divide surds with algebra.

0:04:00

Equate the area of fractions of circles or full circles to determine a length.

0:04:40

Find the exact perimeter of a simple fraction of a circle.

0:02:59

Find the exact circumference of a full circle.

0:03:00

Determine the circumference of a circle given the area or perimeter of an enscribing square.

0:03:02

Determine a cost involving the circumference of a full circle.

0:03:07

Simplify (a / √b)^n where n is large.

0:02:26

Simplify expressions of the form (a + √b) / √c

0:04:10

Compare coefficients of surds and non-surds to determine values of variables.

0:01:16

Divide two surds that require simplifying.

0:04:00

Expand an expression of the form (ax+b)^3+(cx+d)^2

0:05:16

Expand expressions of the form (ax+b)^2 - (cx+d)^2

0:02:58

Expand an expression of the form (ax+b)^2(cx+d)

0:02:28

Expand expressions of the form (a+b/x)^2

0:02:42

Expand two brackets in the form ax(bx+c)(dx+e).

0:03:16

Round a whole number to a given number of significant figures.

0:10:57

11 How to complete an assigned task homework

0:05:16

10 The student view

0:10:09

5 How to set flexible questions as a task