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3 years ago

Solve for the equation y to the second power = 81

Mathematics

2 answers:

Orlov [11]3 years ago

6 0

Answer:

Step-by-step explanation:

$y^2=81\iff y=\pm\sqrt{81}\\\\y=-9\ or\ y=9\ because\ (-9)^2=81\ and\ 9^2=81$

dybincka [34]3 years ago

3 0

Answer:

Step-by-step explanation:

9*9=81

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lorasvet [3.4K]

Answer:

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