Q3 of 53 Page 77

Factorise:

4x2 + 4x + 1

using (x + y)2 = x2 + 2xy + y2

= (2x)2 + 2 × 2x × 1 + 12


= (2x + 1)2


= (2x + 1)(2x + 1)


More from this chapter

All 53 →
2

Factorise:

x2 – x – 72

 3

Factorise:

x2 + 14x + 49

 3

Factorise:

a2 – 10a + 25

 3

Factorise:

2x2–24x + 72