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20-01-2022
Mathematics

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Use suitable identity and find the product of:
(2a-7)(2a-7)

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Аноним Аноним

20-01-2022

[tex]\\ \sf\longmapsto (2a-7)(2a-7)[/tex]

[tex]\\ \sf\longmapsto (2a-7)^2[/tex]

(a-b)^2=a^2+b^2-2ab

[tex]\\ \sf\longmapsto 2a^2-2(2a)(7)+49[/tex]

[tex]\\ \sf\longmapsto 4a^2-28a+29[/tex]

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