Which of the following shows 9x2y - 4x + 3y3x - 2y2 written in standard form?

9x2y - 4x + 3y3x - 2y2

3y3x - 2y2 + 9x2y - 4x

9x2y - 4x - 2y2 + 3y3x

3y3x + 9x2y - 2y2 - 4x

option (4) is correct.

the given expression  can be written in standard form as .

Step-by-step explanation:

The Standard form of writing an equation,  

1) Look at the degree of each term.

2)  You then write each term in order of degree, from highest to lowest, left to right..

3) The expression has an exponent of 2 on the x and an unwritten exponent of 1 on the y, so this term is to the third degree (2+1). We add the two degrees together because it has two variables.

Consider the given equation,

We have to write it in  standard form using the steps stated above,

first we find the degree of each term in the given expression,

The expression has an exponent of 2 on the x and an unwritten exponent of 1 on the y, so this term is to the third degree (2+1).

The expression has an exponent of 3 on the y and an unwritten exponent of 1 on the x, so this term is to the third degree (3+1).

So the highest degree in the given expression is  

write each term in order of degree, from highest to lowest, left to right.

following this , we can write the expression as,

Thus, option (4) is correct.

4x and 6y

im not sure though

solution:

the given function is ,

      =

the three roots of this quadratic function is , 0 ,8 and 10.all the roots are real and rational.

if a quadratic equation is of the form ,

sum of the roots = a + b +c= 0+8+10=18=  

product of roots taken two at a time = a b + b c+ c a = 0+80+0=80 =  

product of roots = a b c = 0=  

there are 11 doors in a hall starting from 0 to 11.the entry in the hall is permitted through gate number 0 and exit is allowed through only gate number 8 and 10.so, three roots(0,8,10) of quadratic function is given by entry and exit route of this hall.