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What are the same base multiplication in the second volume of seventh grade mathematics?
Same base powers's multiplication: same base powers's multiplication, the original base is the base, and the sum of indexes is the index, which is expressed in letters as: am× an = am+n (both m and n are natural numbers).

increase

1, same base power, constant base, exponential addition: a m× a n = a (m+n)) (both m and n are integers), that is, power of power, constant base, exponential addition.

2. A power with the same radix refers to a power with the same radix.

separate

Division with the same base, constant base, exponential subtraction: a m ÷ a n = a (m-n) (m and n are integers, a≠0).

For example, a 5 ÷ a 2 = a (5-2) = a 3, which means that a m is the m power of A, a n N is the n power of A, and a (m+n) is the m+n power of A.

power exponent

When the exponent of a power is negative, it is called "negative exponential power". The -r power of a positive number A (R is any positive number) is defined as the reciprocal of the R power of A. ..

Such as: the fourth power of 3

=3^4

=3×3×3×3

=9×3×3

=27×3

=8 1

As shown in the above formula, the 6th power of 2 is the multiplication of 6 2s, and the 4th power of 3 is the multiplication of 4 3s.

If it is a relatively large number multiplication, you can also use calculation tools such as settlement calculator and computer to calculate.