Assuming you wrote I at the end as a mistype
Answer:
[tex]8y^2-26y-70[/tex]
Step-by-step explanation:
We expand using the distributive property to get that the expression is equal to [tex]2y(4y+7)-10(4y+7)[/tex].
We use the distributive property again to get that the expression is equal to [tex](2y)(4y)+(2y)(7)-(10)(4y)-(10)(7)=8y^2+14y-40y-70=\boxed{8y^2-26y-70}[/tex].
