Solving inequality (x + 2) (x-3)

Solving inequality (x + 2) (x-3)

（x+2)(x-3)-2
(2x-5)(2x+5)

1. It is known that a = 2x & # 178; + 4xy-2x-3, B = - X & # 178; + XY + 2, and 3a + 6B
Not finished, the next is: independent of X, find the value of Y

Because a = 2x & # 178; + 4xy-2x-3b = - X & # 178; + XY + 2, 3A + 6B = 3 (2x & # 178; + 4xy-2x-3) + 6 (- X & # 178; + XY + 2) = 6x & # 178; + 12xy-6x-9-6x & # 178; + 6xy + 12 = 18xy-6x + 3 = (18y-6) x + 3, because the value of 3A + 6B has nothing to do with X, it shows that the coefficient of any term containing x is

x+5 6x+4>7 x/3=7 3x=5*6 a

If a and m are all constants, then
The equations are: X / 3 = 7, 3x = 5 * 6, 4x = 0, 2A = 1, 20 = 2m
The equation is: X / 3 = 7, 3x = 5 * 6, 4x = 0
If a and m are both unknowns, then
The equations are: X / 3 = 7, 3x = 5 * 6, 4x = 0, 2A = 1, 20 = 2m
The equations are: X / 3 = 7, 3x = 5 * 6, 4x = 0, 2A = 1, 20 = 2m

Kneel to seek solution! Mathematics problem of grade one in junior high school! Kneel to seek! To hand in tomorrow! Kneel to seek!
Given the fifth power of the algebraic formula ax + BX & # 179; + 3x + C, when x = 0, the value of the algebraic formula is - 1. (1) given that when x = 3, the value of the algebraic formula is - 1, try to find the value of the algebraic formula when x = 3. (2) under the known condition of the first question, if 5A = 3B holds, try to compare the size of a + B and C
The first question is wrong!!!!!!!!!!!!!! it's x = - 3. Seeking process!!!!!!!!!!!!!!!!!! kneeling!!!!!!!!!!!!!!!!!

The first question is wrong - 3, the answer is - 1
A + B is greater than C

Using the collocation method to solve the equation: 1, x ^ 2-x-7 / 4 = 0.2, 4x ^ 2-6x-3 = 0.3, X (x + 4) = 8x + 12 (write the details)

x^2-x-7/4=0
（x-1/2）^2-1/4-7/4=0
(x-1/2)^2=2
x-1/2=±√2
x=1/2±√2
4x^2-6x-3=0
x^2-3/2x-3/4=0
(x-3/4)^2-9/16-12/16=0
(x-3/4)^2=21/16
x-3/4=±√21 /4
x=3/4±√21 /4
x(x+4)=8x+12
x^2+4x=8x+12
x^2-4x=12
(x-2)^2=12+4=16
x-2=±4
x1=6 x2=-2

A polynomial about X, y, except the constant term, the degree of the other terms is 3, then how many terms does the polynomial have at most? Try to write one of them

The sum of XY times is 3
Then x times can be 0, 1, 2, 3 times
The corresponding times' of Y are 3, 2, 1 and 0
Add a constant term
So it's five
For example, Y & # 179; + XY & # 178; + X & # 178; y + X & # 179; + 1

Connect inequality system: 4x-30 less than or equal to 0, 6x + 24 greater than or equal to 0

4x-30=0 (2)
The solution (1) is x = - 4
So the solution of the inequality system is - 4

What is a polynomial, what is a constant expression in a polynomial, and what is a polynomial with several degrees and several terms

A formula consisting of several monomials is a polynomial
It should be a constant term
The constant term is the number 1.2.3
The sum of the highest degree in a polynomial is the degree of the polynomial
This polynomial is composed of several monomials

The solution set of inequality (3 - π) x greater than or equal to π - 3 is_______ Where the smallest integer solution is_________

The solution set of inequality (3 - π) x greater than or equal to π - 3 is__ X

Say the following polynomials are several times and several terms, and point out the constant term
2XY minus one
The fourth power n of 5m minus 2 / 1m multiplied by the seventh power of N plus 5, the third power of M multiplied by the fourth power of n minus 7

(1) Quadratic binomial, constant term is negative one third
(2) The constant term is 5