Question

Cuáles son las raíces de la ecuación 2x2-3x-14=0? Resuelve por formula general ​

Answer 1

Respuesta:

X1 = 7 / 2

X2 = - 2

Explicación paso a paso:

a = 2

b = -3

C = - 14

X= [-b ± ✓ (b²-4ac)] ÷ (2a)

X1 = [-b + ✓ (b²-4ac)] ÷ (2a)

X1 = [ 3 + ✓ 9 - 4( - 28 ) ] ÷ (4)

X1 = (3 + ✓121 ) / 4

X1 = 7 / 2

X2 = [-b - ✓ (b²-4ac)] ÷ (2a)

X2 = [ 3 - ✓ 9 - 4( - 28 ) ] ÷ (4)

X2 = (3 - ✓121 ) / 4

X2 = - 2