Réponse :
Explications étape par étape
Bonjour,
-1/x = 5
-1/x * x = 5 * x
-1 = 5x
5x/5 = -1/5
x = -1/5
8/x + 4 = -2
8/x = -2 - 4
8/x * x = -6 * x
8 = -6x
-6x/-6 = 8/-6
x = -8/6
x = -4/3
3/x - 1 = 5/x + 7
-1 - 7 = 5/x - 3/x
-8 = 2/x
-8 * x = 2/x * x
-8x = 2
-8x/-8 = 2/-8
x = -2/8
x = -1/4
x(3/x² - 1) + 2 = x(1/x² - 1)
3/x - x + 2 = 1/x - x
3/x - 1/x = x - x - 2
2/x = -2
2/x * 2 = -2 * 2
x = -4
4√x + 3 = 6
4√x = 6 - 3
4√x = 3
√x = 3/4
(√x)² = (3/4)²
x = 9/16
4√x - 7 = 2√x
4√x - 2√x = 7
2√x = 7
√x = 7/2
(√x)² = (7/2)²
x = 49/4
