Factorise: 10ab + 4a – 5b – 2
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Answer:
(2a - 1) (5b + 2)
Step-by-step explanation:
10ab - 5b + 4a - 2
= 5b ( 2a - 1 ) + 2 ( 2a - 1 )
= (2a - 1) (5b + 2)
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