Question

m²+m-20=0 (resolva algebricamente as equações)

Answer 1

a=1, b=1 e c= -20

Δ = b²-4ac ∴ Δ = 1²-4(1)(-20) = 1+80 = 81

m = -b +/- √Δ / 2a ∴ x = -1 +/-√81/ 2(1)
m1 = -1+9/2 = 4
m2 = -1-9/2 = -5