Question

Resolva mentalmente as equações, considerando
U = R, e registre as raízes.
a) x2 - 3=33
c) 2x2 = 200
b) x2 - 44 = 5
d) 3x2 = 27​

Answer 1

a) x2 = 33+3
x2= 36
X = raiz de 36
x= 6

c) x2= 200/2
x2 = 100
X= raiz de 100
x= 10

B) x2 = 5+44
x2= 49
x= raiz de 49
x= 7

d) x2=27/3
x2=9
x= raiz de 9
x= 3