Question

Me ajudem
2x2 + X - 3 =0

Answer 1

Olá.

2x^2 + x - 3 = 0

A = 2

B = 1

C = -3

Delta = b^2 -4aC

Delta = (1)^2 - 4(2)(-3)

Delta = 1 + 24

Delta = 25.

X = -b + - raiz de Delta/2a

X = -1 + - raiz de 25/ 2(2)

X1 = - 1 + 5/4 = 4/4 = 1

X2 = -1 -5/5 = -6/4 simplifica por 2 = -3/2

Confirmar:

2x^2 + x - 3 = 0

2(1)^2 + 1 - 3 = 0

2(1) +1 -3 = 0

2 + 1 - 3 = 0

3 - 3 = 0

0 = 0

RESPOSTA: X ( 1; 3/2)