Question

cacule as raizes das equçoes abaixo a) x²-5x + 6 =0 b)x² -8x + 6 = 0 c)x²+2x+12=0 d) x²+2x+8=0

Answer 1

a - 2e 3
b- 4 raiz de +10,  4 raiz -10
c- sem raiz
d - sem raiz