1)100 2)0,81 3) 66 4)284
1.√x=10 , x≥0
(√x)²=10² , x=100
2.√x=0,09 , x≥0
(√x)²=0,09² , x=0,0081
3.√(x-2)=8 , x-2≥0, x≥2
x-2=64 , x=66
4.√(x+5)=17 , x≥-5
x+5=289 , x=284
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Answers & Comments
1)100 2)0,81 3) 66 4)284
1.√x=10 , x≥0
(√x)²=10² , x=100
2.√x=0,09 , x≥0
(√x)²=0,09² , x=0,0081
3.√(x-2)=8 , x-2≥0, x≥2
x-2=64 , x=66
4.√(x+5)=17 , x≥-5
x+5=289 , x=284