Question

1)encontre as raízes das equações do 2 grau incompleta.
a)2x²-50=0
b)2x²-2=0
c)2x²-18=0
d)3x²-75=0
e)4x²-100=0
f)-x²+64=0
g)9x²-=0
h)5x²-10=0
2)resolva as equações e dê raízes
a)(3x+5)²=36
b)(-2x+1)²=49
c)(x|3+6)²=81
d)(2x+1)²=1
e)(x|2 -10)² =100
f)(3-2x)²+36

40 pontos

Answer 1

1
a= 2x²-50=0  => x²=25 => x=5
b= 2x²-2=0    => x²=1   => x=1
c= 2x²+18=0 => x²=9   => x=3
d= 3x² -75=0 => x²=25 => x=5
e= 4x²-100=0 => x²=25 => x=5
f= -x²+64=0    => -x²=-64 => x=8
g= 9x²=0        => x²=0/9   => x=0
h= 5x²-10=0   => x²=2     => x=1,41