Question

5x^2-(2m-1)x+2m=0 determine m de modo a que a soma das raizes seja 4

Answer 1

Resposta:

m = 21/2

Explicação passo a passo:

$S=\frac{-b}{a}\\\\4=\frac{-[-(2m-1)]}{5} \\\\4=\frac{2m-1}{5}\\\\2m-1= 20\\\\2m=20 + 1\\\\m=\frac{21}{2}$