I used the FOIL method to solve (x+2y2)(x-4y) and i was wondering is the right answer is -8y^3+2xy^2+x^2-4xy?

Question

it told me i was suppose to combine like terms too if they were any and i was wondering if u combine 2xy^2 and -4xy ?? yet the y has a square soo ??? confused....and the ^ and then a number means its squared

Answer 1

by George, I think you got it!
But you cant combine any terms here - in order to combine them, they have to have the exact same combinations of variables and exponents!

Answer 2

Lol. R u interior the 1st grade? Im no longer gonna basically tell u, reason u wont learn infant! yet i'm going to tell u the thank you to do it your self. Eg 2x+y=3 x+2y=4 a million - make eighter the quantity next to x or y the comparable with the help of multiplying each quantity in a single of the two equations with the help of a quantity. 4x+2y=6 (first equation accelerated with the help of two) X+2y=4 2 - now eighter upload or subtrackt one equation with the help of the different. 4x-x+2y-2y=6-4 3 - sooo 3x=2 4 - sooooo answer section a million is... X=3/2 5 - now positioned the x fee into between the commencing equations 2(3/2)+y=3 6 - sooo 3+y=3 7 - sooo answer section 2 is Y=0 Now do the comparable for ur questions. Like relatively dude, this is easy. U ought to be certain my computing device! The issues i ought to do are basically brutal.

Answer 3

i got x^2-4xy+2xy^2-8y^3 that is if u meant y is squared

Answer 4

Yes, that is the right answer. You can only combine terms of the same variables, such as 2xy +3xy = 5xy.

Answer 5

it is going to be:

X^2-4XY+2XY^2-8Y^3

if it is (x+2Y^2)(X-4Y)

Note: I also used FOIL, too

Answer 6

yep, you got it