Question

a) Factorise p² +9p + 14

b) Factorise 9p²-49q²​

Answer 1

Question :

a) Factorise p² +9p + 14

b) Factorise 9p²-49q²

Solution :

1. p² + 9p + 14

p² + 7p + 2p + 14

p( p + 7 ) 2( p + 7 )

( p + 2 ) ( p + 7 )

2. 9p² - 49q²

using a² - b² = ( a + b ) ( a - b )

( 3p )² - ( 7q )²

( 3p - 7q ) ( 3p + 7q )

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