solve each equation by extracting square roots.
1. ×^2=289
2. d^2=16
3.3e^2=108
4.m^2+3=28
5.7×^2+1=29
6. ×^2-5=-4
7. -2k^2=-162
8. n^2+5=86
9. p^2-6=115
10. -5×^2=-500

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Math

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solve each equation by extracting square roots.
1. ×^2=289
2. d^2=16
3.3e^2=108
4.m^2+3=28
5.7×^2+1=29
6. ×^2-5=-4
7. -2k^2=-162
8. n^2+5=86
9. p^2-6=115
10. -5×^2=-500

Sagot :

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1. x=±√289=±17

2. d=±√16=±4

3. e^2 = 108/3
e^2 = 36
e = ±√36 = ±6

4. m^2 = 28-3 = 25
m= ±√25 = ±5

5. 7x^2= 29-1 = 28
x^2 = 28/7 = 4
x= ±√4 = ±2

6. x^2= -4+5 = 1
x = ±√1 = ±1

7. k^2 = -162/-2 = 81
k= ±√81 = ±9

8. n^2 = 86-5 = 81
n= ±√81 = ±9

9. p^2 = 115+6 = 121
p = ±√121 = ±11

10. x^2 = -500/-5 = 100
x = ±√100 = ±10

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