Answer:
(x+2)(4x-1)
For this problem, use the FOIL (first, outside, inside, last) method
You have x, 2, 4x, and -1. Start by multiplying x by 4x and -1. Then multiply 2 by 4x and -1. You should have four separate values to add together.
(x*4x)+(x*(-1))+(2*4x)+(2*(-1)) = 4x^2+(-x)+8x+(-2)
Once you have this, order each value by their exponents and combine like terms. The highest exponents always go to the left and lowest exponents go to the right.
4x^2+7x-2