Factor 12a^2-15ab-16a+20b
1 answer:
Answer:
(4a-5b) (3a-4)
Step-by-step explanation:
12a^2-15ab-16a+20b
(12a^2-15ab) + (20b-16a) Factor out 3a
Factor out 4 from 20b-16a: 4(5b-4a)
3a(4a-5b)(5b-4a)
4(5b-4a)= -4(4a-5b)
3a(4a-5b)(4a-5b)
(4a-5b)(3a-4)
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