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Zoufri38
@Zoufri38
April 2019
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(4x-1)2+(x+2)2 Ps: les 2 après les parenthèse c'est au carré
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Bonsoir ,
(4x-1)² + (x+2)²
= (4x)² + 1² - 2 × 4x × 1 + x² + 2² + 2 × x × 2
= 16x² + 1 - 8x + x² + 4 + 4x
=
17x² - 4x + 5
1 votes
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(4x-1)² + (x+2)²
= (4x)² + 1² - 2 × 4x × 1 + x² + 2² + 2 × x × 2
= 16x² + 1 - 8x + x² + 4 + 4x
= 17x² - 4x + 5