Question

quais são as raizes da função f(x)=x^2+3x-4 ?

Answer 1

f(x) = x²+3x-4
Δ = 3²-4x1x(-4)
Δ = 9+16
Δ = 25

x¹ = -3+5/2 = 2/2 = 1
x² = -3-5/2 = -8/2 = -4

As raízes são 1 e -4