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Question
Factorize each of the following expression:
125x2 − 45y2
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Solution
\[125 x^2 - 45 y^2 \]
\[ = 5(25 x^2 - 9 y^2 )\]
\[ = 5[(5x )^2 - (3y )^2 ]\]
\[ = 5(5x - 3y)(5x + 3y)\]
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