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Q23 of 60 Page 23

Factorise:
x² + 9x + 18

x² + 9x + 18

The third term “18” is factorized as: 3 and 6

Then,

x² + 3x + 6x + 18

⇒ x(x+ 3) + 6( x + 3)

⇒ (x+3)(x+6)

More from this chapter

21

Find the value of m so that 2x – 1 be a factor of 8 22

If x + 1 is a factor of 23

6x² + 7x – 3

23

Factorise:

2x² – 7x – 15