BISCOTTE62000
Answered

Bonjour j'arrive pas à résoudre ces equations


a) 4x^2 = 24

b) 2x^2 – 15 = 24

d) 2x^2 + 52 = -20​

Sagot :

Bonjour,

a) 4x² = 24

x² = 24/4

x² = 6

x= √6

b) 2x² – 15 = 24

2x² = 24 +15

2x² = 39

x² = 39/2

x² =19,5

x = √19,5

d) 2x² + 52 = -20​

2x² = -20 -52

2x² = -72

x² = -72/2

x²  = 36

x= √36

x= -6 ou 6