Question

Arma as contas
A)
B)
C)
D)
E)
F)
G)
H)
I)
???

Answer 1

a)
x = ±√49
x = ± 7

b)
x² = 98/2
x = ±√49
x = ±7

c)
3x² = 27
x = ±√9
x = ± 3

d)
21/7 = x²
√3 ± = x

e)
x² = -20/5
x = ±√-4
x = ± 2i

f)
√(16/9) ± = x
4/3 ± = x

g)
x = ±√(5/9)
x = ±(√5)/3

h)
x = ±√25
x = ±5

i)
x = ±√49/3
x = ± 7/√3 * √3/√3
x = 7√3/3