How do you multiply (4x+5)(3x^2-5)?

1 Answer
Jul 27, 2016

12x^3+15x^2-20x-25

Explanation:

Step 1
I multiplied
(4x)3x^2=12x^3

Step 2
I multiplied
4x(-5)= -20x

So far we have
12x^3-20x

Step 3
I multiplied
(5)3x^2=15x^2

Step 4
I multiplied
5( -5 )=-25

We have
15x^2+25

Step 5
In total, we have
12x^3 - 20x + 15x^2-25
Final step
We put everything order by powers, since there are no like terms to combine
12x^3+15x^2-20x-25