What is the third power of the monomial 4xy?
(4xy)^3 = 64 x^3 y^3
This is a binomial expression of six times
4xy^3
This is a binomial expression of 4 times
Which one do you need?
Given that the sum of monomial 0.25x ^ b * y ^ C and monomial-0.25ax ^ M-1 * y ^ 2N-1 is 0.625x ^ n * y ^ m, find the value of ABC
Dear brothers and sisters, we are just shallow,
Sum is a monomial
So the two are of the same kind
And it is the same as their sum
So x and y are equal
So B = M-1 = n
c=2n-1=m
Coefficient 0.25-0.25a = 0.625
So 0.25A = - 0.375
a=-1.5
m-1=n
2n-1=m
The solution is n = 2, M = 3
therefore
a=-1.5
b=n=2
c=m=3
Given that the sum of the monomial 0.25xbyc and the monomial-0.125xm-1y2n-1 is 0.625axnym, the value of ABC can be obtained
fast
a=(0.25-0.125)/0.625=0.2
b=m-1=n
c=2n-1=m
The solution of the equation is: B = n = 2, C = M = 3
abc=0.2*2*3=1.2
Is ABC a monomial
Yes
Scientific counting: write a number as_________ Where the value range of a is_________ It's called expressing a number by scientific counting
A × 10N is less than 10
When using scientific counting method to express numbers, special attention should be paid to: the value range of a is____ ,n
When using scientific counting method to express numbers, special attention should be paid to: the value range of a is____ The value of n is.
0<a<10
N is a positive number
In the scientific counting method a * 10 ^, ^ is an integer, and the value range of a is
A 1<|a|<10 B 1<|a|≤10
C 1≤|a|<10 D 1≤|a|≤10
In the scientific counting method a * 10 ^ n, n is an integer,
A is from 1. P to 9. Q, where P and Q are the numbers after the decimal point,
In scientific counting method, 1. P × 10 ^ n 9. Q × 10 ^ n,
That is to say, the value range of a is 1 ≤ a ≤ 9,
When p = 0, a = 1
The answer should be (c)
K is expressed by scientific notation as the fifth power of a multiplied by 10, and the value range of K is ()
If it can be expressed by scientific counting, then the size range of a is 1
When we use scientific counting method to express numbers, we should pay special attention to the value range of A____ The value of n is ()
0<a<10
The value of n is an integer
Scientific notation mathematics
(1) If the nth power of 1.07 × 10 is a number with integer bit 6, then n is______
(2) There are about 80 million bacteria in a pair of handbands that have not been washed______
(3) If the mass of the earth is 1.3 billion tons to the 6 × 10 and the mass of the sun is 5 times to the 3.3 × 10 of the earth, then the mass of the sun is___________
(4) 10 power of 1.25 × 11 power of 8 (- 40) × 101 power of (0.25) × 100 power of (0.25)
1)5
2)8×10^8
3)1.98×10^26
4)1×10^21 -1×10^202