CHAPTER 8A-F

Question 0

Factorising binomial products?

Answer 0

eg) 40 - 16b
= 8 ( 5-2b)
(Find the HCF and place it in front of brackets then divide each number by HCF)

Question 1

Binomial product formula and example?

Answer 1

firsts, outsides, insides, lasts
eg) (x+5) (x+4)
= x^2 + 4x +5x + 20
=x^2 + 9x + 20

Question 2

Factorise monic quadratic trinomials?

Answer 2

eg) x^2 + 5x + 6
= (x+2) (x+3)
(Because 2+3=5 and 2x3=6)

Question 3

More quadratic trinomials?

Answer 3

Remember to look out for negative and positive numbers!