Answer:
B. \(8x^2+46x+56\)
Step-by-step explanation:
We must multiply the elements of each parenthesis by the terms of the other parenthesis, We will have the following:
\((2x + 8)(4x + 7)=(2x)(4x)+(2x)(7)+(8)(4x)+(8)(7)\\(2x + 8)(4x + 7)=8x^2+14x+32x+56\\\)
We have two terms with x, so we add them:
\((2x + 8)(4x + 7)=8x^2+46x+56\)
So the correct answer is B.
