How do you simplify #(x - 4)(x + 8)#?
2 Answers
Apr 7, 2018
Explanation:
We can use the highly useful mnemonic FOIL, which says we multiply the first, outside, inside and last terms, and add the result. This is essentially doing the distributive property twice. We get:
- First terms:
#x*x=x^2# - Outside terms:
#x*8=8x# - Inside terms:
#-4*x=-4x# - Last terms:
#-4*8=-32#
Thus ,we have:
Which simplifies to
Hope this helps!
Apr 7, 2018
Explanation:
Using the distributive property, when you multiply two polynomials together, you have to multiply each term of the first polynomial with the entire second polynomial.
