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Radda [10]
3 years ago
5

Solve each equation by taking square roots 10p^2 +20=1490

Mathematics
2 answers:
dimulka [17.4K]3 years ago
3 0
10p^2 +20=1490  


10p^2=1490-20
 
        Subtract \ 20 \ from \ both \ sides

10p^2=1470

 
 

p^2= \dfrac{1470}{10}         Divide \ both \ sides \ by \ 10

p^2=147 

p=+ \sqrt{147}       Take \ the \ square \ root \ of \ both \ sides

p=+7 \sqrt{3}
pantera1 [17]3 years ago
3 0
10p^2+20=1490
1\sqrt{10p^{2} =1470} 
10p=38.34
p=3.834
0p^2=1470
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