Question

4x ao quadrado - 9 igual a zero

Answer 1

4x^2 - 9 = 0
x = 0 +- 12/8
x' = 3/2
x" = - 3/2

S = { 3/2 ; -3/2 }

Answer 2

x² = 9 / 4

x = V9/4

x' = 3/2

x'' = -3/2