In a n n, the same multiplier A is called the base, the number N of A is called the exponent, and the result of the power operation of A N is called the power (pronounced mi). A n is pronounced as the n power of A. If A n is regarded as the result of power, it is pronounced as the n power of A, and the quadratic power of A (or the quadratic power of A) can also be pronounced as the square of A; The cubic of a (or the cubic of a) can also be read as the cubic of a.
Every natural number can be regarded as a power of this number, also called a power. For example, 8 can be regarded as 8 1. When the index is 1, it is usually omitted.
Law of multiplication with the same base and power;
Multiply and divide the power with the same base, the original base is the base, and the sum or difference of indexes is the index. Expressed in letters as:
A m× a n = a (m+n) or a m÷a n = a(m-n)(m and n are natural numbers).
1) 15^2× 15^3= 15^(2+3)= 15^5
2)3^2×3^4×3^8=3^(2+4+8)=3^ 14
3)5×5^2×5^3×5^4×…×5^90=5^( 1+2+3+…+90)=5^4095
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