👤

Sagot :

LOULAKAR

Réponse :

Explications étape par étape

Bonjour

Résoudre :

7x^2 - 8 = 3x^2 + 17

7x^2 - 3x^2 = 17 + 8

4x^2 = 25

4x^2 - 25 = 0

(2x)^2 - 5^2 = 0

(2x - 5)(2x + 5) = 0

2x - 5 = 0 ou 2x + 5 = 0

2x = 5 ou 2x = -5

x = 5/2 ou x = -5/2

-3x^3 - 17 = 5x^3 + 10

5x^3 + 3x^3 = -17 - 10

8x^3 = -27

x^3 = -27/8

x^3 = -(3/2)^3

x = (-3/2)

|x - 5| = 3

(4x - 7)/(1 - 3x) = -2

1 - 3x # 0

3x # 1

x # 1/3

4x - 7 = -2(1 - 3x)

4x - 7 = -2 + 6x

-7 + 2 = 6x - 4x

-5 = 2x

x = -5/2

Other Questions

© 2024 IDNLearn. All rights reserved.