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GaryK [48]
3 years ago
9

PLEASE HELP

Mathematics
2 answers:
Diano4ka-milaya [45]3 years ago
8 0
x= -9, 9


you have to subtract 15
then u will get x^2= 81
square root on both sides

And u get 9
Katarina [22]3 years ago
5 0

Answer:

Step-by-step explanation:

15 + c² = 96

c²  = 96 - 15

c²  = 81

c²  = 9²

c = 9

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