Helpp
multiply with monomial

The answer is B

Step-by-step explanation:

You can multiply it using Indices formula, a^m × a^n = a^(m+n) :

(-4y)(-9y⁹)

= (-4×-9)(y×y⁹)

= 36y^(1+9)

= 36y^10

Explanation: To simplify this problem, we can first multiply our coefficients hut we must add the exponents on the like bases.

This idea is called the product rule.

So we have -4 · -9 which is 36.

Now add the exponents.

Think of the as .

So we add our exponents to get .

So our answer is .

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.