Question

fórmula de Baskara:
${5x}^{2}$
-3x-2?

Answer 1

5x² -3x -2 = 0
∆ = b² -4.a.c
∆ = (-3)² -4.5.(-2)
∆ = 9 -20.(-2)
∆ = 9 + 40
∆ = 49

-b ± √∆ /2.a
-(-3) ± √49 /2.5
3 ± 7/10

x' = 3+7/10
x' = 10/10
x' = 1


x'' = 3-7/10
x'' = -4/10
x'' = -2/5