Question

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Answer 1

Răspuns:

a) x²=√27:√3

x²=√9

x²=3

x=√3

b) x²=√216:√6

x²=√36

x²=6

x=√6

c) x²=√180:2√5

x²=6√5:2√5

x²=3

x=√3

d) x²=√175×√7

x²=5√7×√7

x²=5√49

x²=5×7

x²=35

x=√35

e) x²=-5√3×(-√3)

x²=+5√9

x²=5×3

x²=15

x=√15

f) 4x²=6√7-√252

4x²=6√7-6√7

4x²=0

x=0