Question

Hallar "t"

2(t-1)(t+2)=3​

Answer 1

Explicación paso a paso:....,,..........................

Answer 2

Respuesta:

t1 = 1,425 t2= -2,425

Explicación paso a paso:

(2.t - 2). (t + 2) = 3

2.$t^{2}$ + 4.t -2.t -4 = 3

2.$t^{2}$ + 2.t -4 - 3 = 0

2.$t^{2}$ + 2.t - 7=0

Aplicando ecuación de segundo grado, a = 2, b=2 y c=-7 nos queda:

$t = (-2) +/- \sqrt{(2)^{2} -4.(2).(-7)} /2.2$

$t = -2 +/- \sqrt{4 +56} / 4$

$t = -2 +/- \sqrt{60} / 4$

$t 1 = \frac{-2 + 7.7}{4} =$ 57/40  o 1,425

$t 2= \frac{-2 -7.7}{4} =$ -97/40 o -2,425