Question

Factorise the following:

a) x² + 14x + 48
b) x² 18x + 81
c) x² - 6x-7
d) x² + 3x - 10​

Answer 1

a) ( x + 6 ) ( x + 8 )

b) ( x + 9 )² if it was a subtraction question then it would be ( x - 9 )²

c) ( x - 7 ) ( x + 1 )

d) ( x - 2 ) ( x + 5 )

Explanation:

1) Use the sum product pattern

2) Find the common factors from the two pairs

3) Rewrite in factored form