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Question
Use the formula to find the factors.
(2) m2 – 25
(2) m2 – 25
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Solution
m2 – 25
= (m)2 – (5)2
= (m + 5) (m – 5) [a2 – b2 = (a + b) (a – b)]
∴ m2 – 25 = (m + 5) (m – 5)
= (m)2 – (5)2
= (m + 5) (m – 5) [a2 – b2 = (a + b) (a – b)]
∴ m2 – 25 = (m + 5) (m – 5)
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