Help:
Find the product.
5y (to the third) (3y +5) (y-3)

Question

Help:
Find the product.
5y (to the third) (3y +5) (y-3)

johnweldon1993 · Answer

$$\large (5y)^3(3y+5)(y - 3)$$

Or

$$\large (5y^3)(3y+5)(y-3)$$

anonymous · Answer

its the second one

anonymous · Answer

actually the 5y to the this is not within parenthesis

johnweldon1993 · Answer

Okay that's fine...so we have

$$\large 5y^3(3y+5)(y - 3)$$

We need to distribute...Multiply $\large 5y^3$ by each term in the first parenthesis

anonymous · Answer

I get that part what messes me up is combining everything 
15y^4 + 25y^3

johnweldon1993 · Answer

Aright...you are correct there...

So we have

$$\large (15y^4 + 25y^3)(y - 3)$$

Now distribute out these parenthesis

what is 15y^4 times y?
what is 15y^4 times -3?
what is 25y^3 times y?
what is 25y^3 times -3?

$$\large 15y^5 - 45y^4 + 25y^4 - 75y^3$$

We can only combine the terms with $\large y^4$ so we have

$$\large 15y^5 - 20y^4 - 75y^3$$

anonymous · Answer

I was just then combining the inside wrong now  get it thank youuuu

johnweldon1993 · Answer

No problem :)