Respuesta :

musiclover10045

7 + √-121

Rewrite √-121 as √-1 * √121

√-1 = i

Now you vae 7 + i * √121

Rewrite √121 as √11^2

Remove the radical to get 11

Now you have 7 + i *11

To get final asnswer 7 +11i

wegnerkolmp2741o

Answer:

7 + 11i

Step-by-step explanation:

7 + sqrt(-121)

7 + sqrt(-1) sqrt (121)

We know that sqrt(-1) = ±i

7 + ±i sqrt(121)

7 + ±i 11

Taking the principal square root

7 + 11i