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3 years ago

The missing base of 81= ^2

Mathematics

2 answers:

sashaice [31]3 years ago

7 0

Answer:

the correct answer is 9²

Eva8 [605]3 years ago

5 0

Answer:

Step-by-step explanation:

It is stating that 81 is equal to x², in which the variable x stands for a number.

Note the equal sign, what you do to one side, you do to the other. Isolate the variable, x, by rooting both sides:

√x² = √81

x = √81 = √(9 * 9) = 9

9 is your missing base.

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$\bf a^{\frac{{ n}}{{ m}}} \implies \sqrt[{ m}]{a^{ n}} \qquad \qquad
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\textit{now, let's distribute the exponent}
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