Question

Encontre as raizes das equações de 2º grau incompletas:

a) x^2 - 169 = 0

b) x^2 - 1 = 0

c) x^2 - 729 = 0

d) 2^x2 - 50 = 0

e) 2x^2 - 2 = 0

f) 2x^2 - 18 = 0




Me ajudem pfvr :)

Answer 1

a) x^2 = 169
x= raiz de 169
x= {-13,13}

b) x^2=1
x= raiz de 1
x= {-1,1}

c) x^2= 729
x= raiz de 729
x= {-27,27}

d) seria 2x^2-50=0, né?

x^2-25=0
x^2=25
x= raiz de 25
x= {-5,5}

e) x^2-1=0
x^2=1
x= raiz de 1
x= {-1,1}

f) x^2-9=0
x^2=9
x= raiz de 9
x= {-3,3}