not sure how to figure this out, any help?

Answer:
[tex]28x^2+20x-8[/tex]
Step-by-step explanation:
[tex]4x(7x-2)+4(7x-2)=\\28x^2-8x+28x-8=\\28x^2+20x-8[/tex]
Answer:
28x^2 + 20x -8. (If you dont know what ^ means, it means to the power of)
Step-by-step explanation:
Expanding, you are left with 28x^2 -8x + 28x-8. Combining like terms, you are left with 28x^2+20x-8.