bonjour
f (x) = 4 x
f ( 5) = 4 *5 = 20
g (x) = x²
g ( 5) = 5 ² = 25
4 x = 30
x = 30/4 = 7.5
x² = 30
x = √30 ou - √30
Bonjour,
on a :
f(x) = 4x
g(x) = x²
f(x) = 30
4x = 30
x = 30/4
x = 7,5
30 = x²
√x = ±√30
x = ±√30
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bonjour
f (x) = 4 x
f ( 5) = 4 *5 = 20
g (x) = x²
g ( 5) = 5 ² = 25
4 x = 30
x = 30/4 = 7.5
x² = 30
x = √30 ou - √30
Bonjour,
on a :
f(x) = 4x
g(x) = x²
f(x) = 30
4x = 30
x = 30/4
x = 7,5
g(x) = x²
30 = x²
√x = ±√30
x = ±√30