Question

EXPONENTS
$\ \textless \ br /\ \textgreater \ {3}^{x} = 9 \times {3}^{y}3x=9×3y\ \textless \ br /\ \textgreater \ ​$
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Answer 1

Exponents are numbers that have been multiplied by themselves. For instance, 3 · 3 · 3 · 3 could be written as the exponent 34: the number 3 has been multiplied by itself 4 times.

Exponents are useful because they let us write long numbers in a shortened form. For instance, this number is very large:

1,000,000,000,000,000,000

But you could write it this way as an exponent:

1018

It also works for small numbers with many decimal places. For instance, this number is very small but has many digits:

.00000000000000001

It also could be written as an exponent:

10-17

Scientists often use exponents to convey very large numbers and very small ones. You'll see them often in algebra problems too.

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