Answer:
2x^2+7x-4
Step-by-step explanation:
Use FOIL: multiply the first terms, inside terms, outside terms and last terms.
(2x-1)(x+4)
F: first terms: 2x*x=2x^2
O: outside terms: 2x*4=8x
I: inside terms: -1*x=-x
L: last terms: -1*4=-4
Add everything together
2x^2+8x-x-4
Combine like terms
2x^2+7x-4
Answer:
2x^2 + 7x -4
Step-by-step explanation:
First: 2x*x = 2x^2
Outside: 2x*4 = 8x
Inside: -1*x = -x
Last: -1*4 = -4
Add all products into one line
2x^2 + 8x -x -4
Simplify/Combine like terms
2x^2 + 7x -4
