Question

Resolva a Questões:
a) 2x² – 7x + 6 =0

b) 16x² – 8x – 3 =0}

Answer 1

letra a) Δ=b²- 4.a.c

Δ= (-7)²-4.2.6

Δ= 49-48=1

x = -b+- √Δ / 2.a

x = 7 +- 1/ 2.2

x1 = 2 e x2 = 3/2

letra b ) Δ= 64 +192 = 256

x = 8 +- 16 / 2.16

x1=3/4 e x2=-1/4