Question

what is the simplified form of each expression?
(-2x^8) * 3y^9 * 2x^4

a. 3x^12y^9
b. -12x^72y^9
c. -12xy^21
d. -12x^12y^9

Answer 1

@misty1212

Answer 2

@imqwerty

Answer 3

@Gabylovesyou

Answer 4

Well it looks like you multiply like terms over:
I believe it would be like this for starters to simplify it a bit for you:
(-2x^8) * 3y^9 = -6x^8y^9 ~ With that being said, what would you do with:
-6x^8y^9 * 2x^4 = ?

Answer 5

combine all the exponents?

Answer 6

No, multiplication with like-terms is like addition, for example:
x^2 * x^2 = x^4 since it's like:(x*x)*(x*x), anyhow for this you will only be multiplying the 'base number' as I say which would be '-6' and '2' and you would be 'adding' or 'multiplying' the 'x' variables exponents which is '^8' and '^4'. Do you get what to do now?

Answer 7

yeah so multiply all the base numbers first right?

Answer 8

You can, but adding the exponents at the same time isn't going to change much, your final answer is:
-6x^8y^9 * 2x^4 = D. -12x^12y^9
You get that, right?
I hope this helps! Have a great day!
{---Ghostgate---}

Answer 9

oh okay

Answer 10

thanks!

Answer 11

You're welcome! ;)