Grade 10 factorisation 01 2019

What is the first thing you do in factorisation? Look for...

• HCF

• DOTS

• Trinomial

• Panic!

The HCF of

4a²b + 8ab³

is

• 4ab

• 2ab

• 4a²b

• b

Factorise:

a² - b²

• (a + b)(a - b)

• (a - b)(a - b)

• (a + b)(a + b)

• None of these

Factorise fully:

4a² - 16

• 4(a - 2)(a + 2)

• (2a - 4)(2a + 4)

• 2(a - 2)(a + 4)

• (4a - 16)(a + 1)

Factorise:

a² + b²

• None of these

• (a +b)(a - b)

• (a - b)(a - b)

• (a + b)(a + b)

Factorise fully:

12a²b³ - 16a⁴b²

• 4a²b²(3b - 4a²)

• 2ab(6ab² - 8a³b)

• (6ab - 8ab)(6ab + 8ab)

• (12ab - 16ab)(1ab² - 1)

Factorise fully:

a(c - d) + b(c - d)

• (a + b)(c - d)

• (a + b)(d - c)

• (a - b)(c - d)

• (a - b)(c + d)

Factorise fully:

a(c - d) + b(d - c)

• (a - b)(c - d)

• (a + b)(c - d)

• (b - a)(c - d)

• (a - b)(d - c)

Factorise fully:

a² + 5a + 6

• (a + 2)(a + 3)

• (a + 1)(a + 6)

• (a - 2)(a - 3)

• (a - 1)(a - 6)

Factorise fully:

a² - 5x + 6

• (a - 2)(a - 3)

• (a + 2)(a + 3)

• (a - 2)(a + 3)

• (a + 2)(a - 3)