Factorise: 25x² - y² + 6y - 9
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Step-by-step explanation:
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Answered by
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Answer:
(6y+3)(4y-3)
Step-by-step explanation:
=25y^2 -(y^2+6y+9)
=(5y)^2 -(y+3)^2
=(5y +y+3)(5y -y-3)
=(6y+3)(4y-3)
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