Q3 of 53 Page 77

Factorise:

x3 – 12x2 + 36x

using (x–y)2 = x2–2xy + y2

= x[x2–12x + 36]


= x[x2–2 × x × 6 + 62]


= x(x–6)2


= x(x–6)(x–6)


More from this chapter

All 53 →
3

Factorise:

2x2–24x + 72

 3

Factorise:

p2 – 24p + 144

 1

4a + 12b is equal to

 1

The product of two numbers is positive and their sum negative only when