FACTORISE:
25a^2-16(x-y)^2
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2
Answer:
Step-by-step explanation:
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6
Answer:
(5a-4x+4y)(5a+4x-4y)
Step-by-step explanation:
25a^2-16(x-y)^2=(5a)^2-(4(x-y))^2
=(5a+(4(x-y))(5a-(4(x-y))
=(5a-4x+4y)(5a+4x-4y
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