could someone help me with math?

Question

Multiply the following polynomials.

(a-4)(a^2-5a+6)

Answer 1

Think of the larger factor (a² - 5a + 6) as the greatest common factor.  Knowing this, we can rewrite the product as a form of distributive property.

 

a(a² - 5a + 6) - 4(a² - 5a + 6)

 

 

Now just distribute the terms to get rid of parentheses.

 

a³ - 5a² + 6a - 4a² + 20a - 24

 

 

Finally, combine like terms.  I leave this part to you to complete.

Answer 2

Like FOILing you have to distribute the a and then the -4 and combine like terms

 

a^3 -5a^2+6a

        -4a^2+20a-24

______________________

a^3 -9a^2  +26a  -24

 

I can help you with all the others if you want to do a session, otherwise I should get some sleep.