### Theory

 1 Square identities 2 Some examples on square identities 3 Cubic identities 4 Some deductions on cubic identities 5 Some examples on cubic identities 6 Cubic identity for three variables

### Exercises

 1 Use suitable identities to find the products Difficulty: easy 2 2 Factorise with appropriate identities Difficulty: easy 2 3 Expand the factor using identity Difficulty: easy 2 4 Express the cube in expanded form Difficulty: easy 2 5 Use a suitable identity to find the products Difficulty: medium 3 6 Assess the product without doing direct multiplication Difficulty: medium 3 7 Factorise for appropriate identity Difficulty: medium 3 8 Develop a given factor using an algebraic identity Difficulty: medium 3 9 Factorize the expression Difficulty: medium 3 10 Evaluate appropriate identities Difficulty: medium 3 11 Write the cube in an expanded form. Difficulty: medium 3 12 Find the products with the appropriate identities Difficulty: hard 4 13 Specify the product without direct multiplication Difficulty: hard 4 14 Factorise with suitable identities Difficulty: hard 4 15 Expand the given factor using the identities Difficulty: hard 4 16 What are the possible expression for the dimension of the cuboid Difficulty: hard 4 17 Examine appropriate identities Difficulty: hard 1 18 Write the cube in expand form Difficulty: hard 4

### Tests

 1 Training test Difficulty: medium 6

### Teacher manuals

 1 Methodical recommendation