Question

Dada a função f(x)=2x²+5x-2, a soma dos coeficientes é: *​

Answer 1

Resposta:

2x²-5x=-2

2x²-5x+2=0

2x-x-4x+2=0

x/(2x-1)-2 (2x-1)=0

(2x-1)/(x-2)=0

2x-1=0

x-2=0

x1=1/2

x2=2