Factorise: a) 15xy - 6x + 5y - 2 b) 6pq - 12qr
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a) 15xy - 6x + 5y - 2 = 0
= 3x(5y - 2) + 1(5y - 2)
= (3x + 1)(5y - 2) = 0
= x = 2/5, -1/3
b) 6pq - 12qr = 0
= 6q( p - 2r ) = 0
= p = 2r
Or,
q = 0
= 3x(5y - 2) + 1(5y - 2)
= (3x + 1)(5y - 2) = 0
= x = 2/5, -1/3
b) 6pq - 12qr = 0
= 6q( p - 2r ) = 0
= p = 2r
Or,
q = 0
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