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22-12-2020
Mathematics

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Express (a+b) ^2 -4 by factorization

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cannepal77 cannepal77

22-12-2020

Step-by-step explanation:

[tex] = (a + b) {}^{2} - 2 { }^{2} \\ = ( a + b + 2)(a + b - 2)[/tex]

in 2nd exp. this is because by using the formula of a2-b2

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