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Free_Kalibri [48]
3 years ago
6

I need this for a test

Mathematics
2 answers:
Brrunno [24]3 years ago
8 0

Answer: x = 16

Step-by-step explanation:

∛9 + x = 15

Divide both sides by 3

√9 + x = 5

The squareroot of 9 + x has to be 5

√9 + x² = 5²

9 + x = 25

Subtract both sides by 9

<em>x = 16</em>

<em></em>

Now we check if our answer is correct

∛9 + x = 15

∛9 + (16) = 15

∛25 = 15

3 × 5 = 15

15 = 15

Its correct!

Hope I helped!

Cerrena [4.2K]3 years ago
7 0

Answer:

x=16

Step-by-step explanation:

Remove the radical by raising each side to the index of the radical.

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