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16.
a)
x √2= 4 /·2
x √4 = 4
2x=4
x=2
b)
y √3=√2 /·2
y√6=√4
y√6=2
y=2/√6
c)
y√7+2=5 /·7
y√49+2=5
7y+2=5
7y=3
y=3/7
d)
4-√5x=9 /·5
4-√25 x =9
4-5x=9
-5x=5
x=-1
e)
6/y=√2/2
6·2=√2y
12=√2y/·2
24=2y
y=12
f)
x∛3=4
x3√3=4 /·9
27x·3=36
81x=36
x=81/36
x=9/4
x=2¼
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16.
a)
x √2= 4 /·2
x √4 = 4
2x=4
x=2
b)
y √3=√2 /·2
y√6=√4
y√6=2
y=2/√6
c)
y√7+2=5 /·7
y√49+2=5
7y+2=5
7y=3
y=3/7
d)
4-√5x=9 /·5
4-√25 x =9
4-5x=9
-5x=5
x=-1
e)
6/y=√2/2
6·2=√2y
12=√2y/·2
24=2y
y=12
f)
x∛3=4
x3√3=4 /·9
27x·3=36
81x=36
x=81/36
x=9/4
x=2¼