1) x^2=7
x=±√7
2)y^2=6
y=±√6
3)3x^2=7
x^2=7/3
x=±√(7/3)
4)4x^2=19
x^2=4,75
x=±√4,75
5)0,3y^2=0,39
y^2=1,2
y=±√1,2
6)3/2x^2=9/4
6x^2=9
x^2=1,5=3/2
x=±√1,5
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Answers & Comments
1) x^2=7
x=±√7
2)y^2=6
y=±√6
3)3x^2=7
x^2=7/3
x=±√(7/3)
4)4x^2=19
x^2=4,75
x=±√4,75
5)0,3y^2=0,39
y^2=1,2
y=±√1,2
6)3/2x^2=9/4
6x^2=9
x^2=1,5=3/2
x=±√1,5