+0  
 
+1
90
2
avatar+1317 

Help Me Please.

 

Imaginary Numbers

 

\(\sqrt{-49} + \sqrt{-64}\)

ManuelBautista2019  Feb 27, 2018

Best Answer 

 #1
avatar+12560 
+1

sqrt (-49) + sqrt (-64)=

sqrt(49 x (-1))  + sqrt( 64 x (-1)

= 7 x sqrt(-1)  + 8 sqrt(-1)              (remember:  sqrt(-1)  is  i  )

= 7i + 8i

= 15 i

ElectricPavlov  Feb 27, 2018
 #1
avatar+12560 
+1
Best Answer

sqrt (-49) + sqrt (-64)=

sqrt(49 x (-1))  + sqrt( 64 x (-1)

= 7 x sqrt(-1)  + 8 sqrt(-1)              (remember:  sqrt(-1)  is  i  )

= 7i + 8i

= 15 i

ElectricPavlov  Feb 27, 2018
 #2
avatar+1317 
+1

Thank You!!

ManuelBautista2019  Feb 27, 2018

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