The square of a number is six times greater than itself. Find the number

The square of a number is six times greater than itself. Find the number

x^2-x=6
x^2-x-6=0
(x-3)(x+2)=0
x1=3,x2=-2
This number is 3 or - 2

The square of (a + 8) + 10 has the most () value. Find the square of 2A
Such as the title
Why can't it be - 9?
By the way, write out the calculation process in detail

The square of (a + 8) + 10 has the minimum value. When a = - 8, the square of 2A = [2 * (- 8)] is 256
The square of (a + 8) + 10 (a + 8) is a non negative number, the minimum is 0, so the square of (a + 8) + 10 has the minimum value

Mr. Liu, let a be a nonsingular matrix of order n and B be an n × M matrix. It is proved that the rank of the product of a and B is equal to the rank of B, that is, R (a
Mr. Liu, let a be a nonsingular matrix of order n and B be an n × M matrix. It is proved that the rank of the product of a and B is equal to the rank of B, that is, R (AB) = R (b)

It is proved that a is a nonsingular matrix of order n, then a is the product of several elementary matrices, so AB is equivalent to performing several row elementary transformations on B, and the elementary transformation does not change the rank of the matrix
So r (AB) = R (b)

The sequence of numbers 1,1,2,3,5,8,13,21,34,55... Is arranged as follows: the first two numbers 1, starting from the third number, each number is the sum of the first two numbers
This sequence is called the peponacci sequence. How many even numbers are there in the first 2010 of the peponacci sequence! Quick

There is an even number in every three
2010 / 3 = 670

How many centimeters is a height of 5 feet and 1 inch

Length 1 inch = 2.5400 cm 1 foot = 12 inches = 0.3048 M 1 yard = 3 feet = 0.9144 M 1 mile = 1760 yards = 1.6093 km area 1 square inch = 6.4516 square cm 1

There are three, eleven, two and eight numbers to calculate 24 points

2 times 8 plus 11 minus 3

(3x-2) (2x-3) = the square of AX + BX + C, then a-2b + 3C =?

(3x-2) (2x-3) = 6x & # 178; - 13X + 6 corresponds to a = 6, B = - 13, C = 6
A-2B+3C=50

Li Hong read a story book. On the first day, she read 60 pages. On the second day, she read 3 / 8 of the whole book. On the second day, she read 1 / 5 more than on the first day. How many pages are there in this book?

Suppose the whole book has x pages
3/8X-60=12
3/8 X=72
X=192

2. It is known that the sum of the two sides of a triangle is 10, and the cosine of its angle is the root of the equation 2x & sup2; - 3x-2 = 0

2x²-3x-2=(2x+1)(x-2)=0
-1

At the same time, the passenger car and the freight car leave from a and B. when they meet, the passenger car takes 5 / 8 of the whole journey, and the passenger car takes a few more than the freight car

Passenger cars travel more than freight cars
5/8-（1-5/8）
=5/8-3/8
=1/4