Seudónimo Seudónimo

13-02-2019
Mathematics

contestada

I'LL GIVE BRAINLIEST What are solutions to the equation y^2 - 1 = 80
-5 and 5
-4 and 4
-7 and 7
-9 and 9
which one???

Respuesta :

fritosglaze fritosglaze

13-02-2019

The answer is -9 and 9

-9 to the second power is 81. 81 minus 1 is 80.

9 to the second power is 81. 81 minus 1 is 80.

Hope this helps!

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