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20 - 25x² + 5 = 5 ( 4 - 5 x² + 1 ) = 5 ( - 5 x² + 5 )
Bonjour,
[tex]20-25x^2+5\\=(5-5x)(5+5x)\\=25+25x-25x-25x^2\\=25-25x^2[/tex]
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bonsoir
20 - 25x² + 5 = 5 ( 4 - 5 x² + 1 ) = 5 ( - 5 x² + 5 )
Verified answer
Bonjour,
[tex]20-25x^2+5\\=(5-5x)(5+5x)\\=25+25x-25x-25x^2\\=25-25x^2[/tex]