Question

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Answer 1

Resposta:

a) x² = 144

x = √144

x = 12

b) x² = 225

x = √225

x = 15

c) x² = 16

x = √16

x = 4

d) 2x² = 50

x² = 50/2

x² = 25

x = √25

x = 5

e) 3x² = 243

x² = 243/3

x² = 81

x = √81

x = 9

f) 6x² = 384

x² = 384/6

x = √64

x = 8

g) 2x² + 6 = 78

2x² = 72

x² = 72/2

x² = 36

x = √36

x = 6