Answer:
Step-by-step explanation:
Answer is ![-x^4 y^2 + 7x^3 y^3 + 2x^2 y^4 -3xy^5](https://tex.z-dn.net/?f=-x%5E4%20y%5E2%20%2B%207x%5E3%20y%5E3%20%2B%202x%5E2%20y%5E4%20-3xy%5E5)
Explanation:
When we are asked to arrange the polynomial in descending order of the powers, also if there is more than one variable, then we need to add all the powers of the variables and then arrange them.
So here in the question, we have to arrange in descending order for the powers of variable x, so we will take the highest order of x first and then arrange in the descending order, as follows:
![-x^4 y^2 + 7x^3 y^3 + 2x^2 y^4 -3xy^5](https://tex.z-dn.net/?f=-x%5E4%20y%5E2%20%2B%207x%5E3%20y%5E3%20%2B%202x%5E2%20y%5E4%20-3xy%5E5)
An irrational number is a number that cannot be expressed in a fraction form while a rational number can.
an example of an irrational numbers are repeating numbers such as 0.77777... and examples of rational numbers are decimals such as 0.20, whole numbers such as 5, and fractions like 2/3
hope this helps a bit.
Answer:
X would equal 4
Step-by-step explanation:
5 x 4 is 20. And the equation was 5x + 1 = 21.
So, the answer would equal 20. Hope this helped!! :D
Answer:
0
Step-by-step explanation:
Substitute x = 3 into the rational expression
![\frac{3^2-2(3)-3}{4(3)^2}](https://tex.z-dn.net/?f=%5Cfrac%7B3%5E2-2%283%29-3%7D%7B4%283%29%5E2%7D)
= ![\frac{9-6-3}{4(9)}](https://tex.z-dn.net/?f=%5Cfrac%7B9-6-3%7D%7B4%289%29%7D)
= ![\frac{0}{36}](https://tex.z-dn.net/?f=%5Cfrac%7B0%7D%7B36%7D)
= 0