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Question
Factorize each of the following expression:
18a2x2 − 32
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Solution
\[18 a^2 x^2 - 32\]
\[ = 2(9 a^2 x^2 - 16)\]
\[ = 2[(3ax )^2 - 4^2 ]\]
\[ = 2(3ax - 4)(3ax + 4)\]
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