Solve a2=81 a=81 a=_____ because __ __ =81 and (- )(- )=81
Added by Sarah S.
Step 1
First, we can take the square root of both sides of the equation a^2 = 81 to get: a = ±9 This is because 9^2 = 81 and (-9)^2 = 81 as well. Show more…
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