Question

Determine o conjunto solução da equação 81 - 16x2 = 0

Answer 1

81-16x²=0
a=-16
b=0
c=81
Δ=(0)²-4(-16)(81)
Δ=0-(-5184)
Δ=0+5184
Δ=5184
x=-0+/-√5184/2*16
x=-0+/-72/32
x1=-0+72/32=72/32= --->divide 72/2 e 32/2=36/16
x2=-0-72/32=-72/32= ---> divide -72/2 e 32/2=-36/16

S{+/-36/16}