Respostas

  • Usuário do Brainly
2014-07-03T15:12:05-03:00
A)
x² -x-20-x-16=0
x²-2x-36=0

a=1
b=-2
c=-36

b)
9x²+3x-12x-4-14+9x=
9x²-18=0

a=9
b=0
c=-18

c)
3x²-5x=x²+5x+6
3x²-x²-5x-5x-6=0
2x²-10x-6=0

a=2
b=-10
c=-6

d)
x²-8x+16-3x+16=0
x²-11x+32=0

a=1
b=-11
c=32