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Sagot :

Explications étape par étape

2x+2 + 3x-1 + x+5 + 4x-4 = 32

32 = 10x + 2

30 = 10x

x = 3

2x + 2 = 2 * 3 + 2 = 6 + 2 = 8

3x - 1 = 3 * 3 - 1 = 9 - 1 = 8

x + 5 = 3 + 5 = 8

4x - 4 = 4 * 3 - 4 = 12 - 4 = 8

Le quadrilatère QUAD est un carré.

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