Question

determine as raizes das equacoes a)x2=81 b)x2=1OO c) (x-7)2 =0 d) (X+5)2=0

Answer 1

Olá Daiannin

a)
 
x² = 81 ,  x1 = -9, x2 = 9

b)

x² = 100,  x1 = -10, x2 = 10

c)

(x - 7)² ) = 0, x = 7

d)

(x + 5)² = 0 , x = -5

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